Design and tech portfolio

1

Portable Electric Guitar

Proudly Sponsored By:

HSC Major Project – BOS Number: 26234026

Contents

Project Proposal……………………………………………………….…..4

Project Management …………………………………………………..20

Project Development and Realisation…………………………..24

Evidence of Creativity…………………………………………………..30

Project Evaluation………………………………………………………..60

Appendix ……………………………………………………………………66

Portable Electric GuitarProject

Proposa

lHSC Major Project – BOS Number: 26234026 3



Project ProposalIdentify The Need

Market research demonstrates the lack of innovation available to make an electric guitar entirely portable. As most musicians will agree, it’s extremely frustrating to have to lug a heavy amplifier, along with leads and extension cords around with you, to simply have a ‘jam’ with others. Along with the portability aspect of the guitar, it would be crucial to have it produce a neat, crisp sound that has the potential to put out a sound of reasonable volume. Not all the time is it possible to please a small crowd with the use of just an in-built speaker from the guitar; therefore it would be extremely helpful to be able to have the option to connect, through radio frequency technology, to existing sound systems.

Brief

I intend on researching, designing and developing a working prototype that allows guitarist to play the electric guitar, remotely (without the need of an amplifier), with the option to connect through radio frequency technology to existing sound systems, that is extremely portable, and ready to play, as soon as it’s picked up.

Constraints and Limitations

• The finished product must be functional and meet the set brief• All aspects must work well, and with minimal delays.• The Project and accompanying portfolio must be completed by August, 2014.• Product should be able to connect wirelessly to existing systems.• Product must be aesthetically pleasing.• Product must be cost efficient to meet the desired market needs.• Must be safe to use, and present no harm to the user.

4



Criteria to Evaluate Success


When starting a new design process, the design features to the solution will need to be assessed in order to discover how well the identified need or want is satisfied. To define this, there a range of topics, under which I should ask myself, to ensure that the best and most suitable product is being produced to meet the requirement. When designing a product it is essential to explore the key areas of design therefore, the criterion is based around these elements:

1. Is the finished product aesthetically pleasing?2. Does the final product meet market quality finishing?

Function

1. Does the final product produce sound from the speaker?2. Is the final product able to connect wirelessly to existing sound systems?3. Is the shape (body) of the guitar comfortable to play?

Aesthetics

1. Is the product safe?1. Is the final product cost effective and a viable purchase for the target market?

Cost Safety

5



Exploration of Existing Products

Areas to Investigate

1. Guitar Shape 2. Type of Neck 3. Materials to Use

1. Speakers 2. Amps 3. Batteries 4. Pickups 5. Wireless Technologies

Hardware

Guitar Design

6



Sponsorship Outcome

SponsorshipProcess for Receiving Sponsorship Funds

1. Identified funds required for project

2. Approximated Budget

3. Identify collaborative partner

4. Approached business personally and presented sponsorship letter and booklet, followed up with phone call.

5. Visited business and accepted cheque

6. Managed Budget

7. Certificate of Recognition

8. Kept partners informed ofprogress.

After I realised the process was going to cost a substantial amount of money, I sat down and devised a strategy to best receive funds from a collaborative partner. Based on previous sponsorship experiences, I finalised that I had to personally approach businesses as a team and present a formal letter personally addressed to the individual business.By creating a personalized strategy I feel as though I'm generating the best impact on potential sponsors, mainly by getting them involved in the project, and not just taking their time and money, and that’s it… I believe that sponsors are a part of the project and should be continually thanked and involved throughout.

Sponsorship Strategy

After recognising potential collaborative partners, I phoned the best music store in the central west first, Lander’s Music in Orange. They were only too happy to have a look at my portfolio. After travelling down to orange that weekend and talking to the owner, he agreed to provide me with a $250 store credit, which was extremely generous of them… That money lightened the burned of cost significantly

Knowing that I must provide a formal letter to not only show my possible collaborative

partner that I’m developing a year 12 major project, but to demonstrate to them how

serious I am to produce a quality, working prototype

The business also got to keep these letter to revise and decide how much they were going to sponsor, or to take to a work meetings and discuss with colleagues. Everything from who I

am , what my project intent is, to what sponsorship packages are available.

Sponsorship letter

7



Investigation Factors Affecting the Design

Throughout the course of Design and Technology, it is essential to assess the process of design, but also the factors that affect it. By analyzing these factors, the quality of the design is greatly improved, as the research as a whole with be more extensive. This results in a more definitive project, which allows one to meet the criteria of the brief, this gives the consumer exactly what they desire. Overall, that is the essential part of the project; to meet the requirements of the brief, set by the possible consumer.When design the enclosure for the guitar, the following aspects were explored:• Appropriateness of Design• Needs• Aesthetics• Sustainability / Durability / Environmental impacts (Energy, Recyclability)• Obsolescence

Appropriateness of Design

When designing something, it is instrumental to take into consideration what is appropriate in regards to the overall design, amount of time spent on something, and also the funds invested. The development of the revolutionary guitar looks at these elements by taking into deep consideration the time spent on particular aspects of the project, as some parts simply don’t require as much tine as others, for example, the development of the budget plan doesn’t require as much time spent on it, in comparison to the creation/management of the portfolio, as the folio is an ongoing part of the overall process; a journal of events, if you must. Due to the factors, the implementation of man plans such as the time management plan (gant chart) was introduced to ensure that the appropriate time was allowed for individual aspects of the project. Appropriateness also explores the market, for a desire for the intended product. It is simply inappropriate to design something that the market already has.

Needs

Needs in an important part of any design project, as we are dealing with investing time, money and resources into producing something. There is no reason to produce a product if the market does not ‘need’ the product. As mentioned above, market research demonstrates the lack of innovation available to make an electric guitar entirely portable. So by addressing the needs of the market, the overall success of the product is greatly heightened.

8



Investigation

Depending on the project, certain elements of the design process tend to take priority over others. In the project it is extremely clear that the overall design should be just as functional as it is aesthetically pleasing, instead of being designed to be placed into mass production. Every design situation should be approached individually, as a vast majority require a significantly different type of time and effort, in regards to the design requirements.

Aesthetics Sustainability/ Durability

In the case of design, aesthetics refers to the overall appeal of the product. If something is referred to as ‘aesthetically pleasing’, it usually represents a positive appeal towards those who are viewing it, and especially those who are intending on buying it. For this particular product, it is essential for the guitar to be extremely pleasing to look at, as this encourages people to go and inquire about what the product can do, the ‘looks’ of the product, draw customers attention. This is crucial to the success of the final product.

While these two design factors can be very different, in a way, they prove to benefit each other better than they contrast. As the two relate to the overall impact of the design, and it’s life time, I can place these two together to assess the requirements they must meet, based on the needs of the product. For this project, the sustainability will be based on the overall construction, and the materials it is built from, while the durability can be assessed of the quality of the works. This is to ensure that the project will sustain it’s appeal, and continue the meet the markets needs.

Obsolescence / Environmental Impacts

Due to history, this kind of product is usually pretty rare to become obsolete as guitars tent be be like old cars, they grow in value the older they become. However as products will still become obsolete over time, the way in which they are dealt with after their ‘life’ is up, is crucial. All parts of the guitar can be recycled and used in other guitars. If this isn’t the case, wood from the guitar can easily be recycled, and so to can the metal and electronics into other products. The electronics can be melted down and re used, with the pickups being replaced and can be reused in another guitar.

Overview

9



Exploration of the Product

Research

Existing Designs

Guitar ShapeThe Shape of a solid body electric guitar doesn’t affect the sound that it produces, that is why there is such a wide variety of shapes and sizes available on the market today; however they all have one common element, that is the way in which they produce sound, through an amplifier. Different brands have their different approaches with the shape design of the product.

Fender® Designs

Fender®is an infamous guitar label that produces extremely high quality products. They are known for their bold design style. Certain styles of the Gibson range provided limited extra space for the incorporation of external hardware, like speakers and amps

etc. Although, one of the designs is highlighted to me that presents enough room

to embed extra hardware into the existing shape, that shape is the ‘Telecaster®’ style

guitar. As my brief incorporates much external hardware, space will become a significant

space will be utilized.Jazzmaster® Telecaster®Stratocaster®

10



Gibson® Designs

Research

The ‘Gibson image’ is a very distinct look in the guitar world. Their similar guitar

shapes are all extremely comfortable for guitarists to use. However, when looking at

this design, I find it extremely difficult to visualise fitting all the components of my design into the guitar shapes. While these guitars are very aesthetically pleasing, the

functionality aspect of the shapes available, simply doesn’t suit my

intentions.SG Flying V Les Paul

Type of Neck

While it is possible to build a neck from scratch, sometimes ‘reinventing the wheel’, gets mind numbing at times. So, I’ve decided that rather than wasting precious time building something that isn’t innovative, it is the most time viable option to purchase one. On the Internet it is extremely easy to just pick and buy one that you like most, so that is what I have decided. A quality Australia site, that supplies guitar materials, made in Australia, is crucial for my design, as I wish to keep my money within the country, it’s the best thing to do if you’re building a product in regards to standard of quality.

11



Neck

Research

From the adjacent three options, I strongly think that option number ‘2’, is of best fit as it is a simple design and it too is a dark colour that will be easily

matchable to my proposed colour scheme of the finished product.

Type of Materials

Neck 1 Neck 2 Neck 3

The type of wood that is used in guitar manufacturing is based on the tonal sound that they produce. Different kinds of wood have different tonal characteristics that affect the sound that the guitar produces. As I simply had no idea where to start, I got in contact with Ray Berketa of ‘Berketa Guitars’ and enquired about which types of woods to look at. Mr Berketa advised me to go to the fender website to find what kinds of woods are used in commercial production. Mr Berketa also recommended to me to look into the following types of wood.

Recommended materials

• Queensland maple

• Mahogany

• Ash

• Swamp ash

• Selery top pine

• Red woods

12



Types of Materials

Research

After research, the product that the market desires is a bright sounding guitar with a nice high end sound, therefore, I wish to fore fill the market requirements. The types of wood that I have found that meet similar tonal characteristics are:

Ash: Exhibits a "snappier" tone with a bright edge, but with a warm bass and long sustain. It is often considered as the other "traditional" Stratocaster body wood.

Mahogany:Deep warm mids, good sustain and nice "bite"

Maple: Punchy, bright, and has a nice bite on the high end. Often used only as a laminated top instead of an entire body, as it tends to be a particularly heavy wood.

Looking into, and researching this wood and its availability locally, set me back quite substantially. The wood was able to be sourced from a local timber company, however, the types of wood which I desired were a lot harder to find, therefore making the wood quite costly, which I was unable to afford. Other options needed to be considered.

A local guitar maker that works at the music shop in town, gave me a hint of advice to seek out some ‘hoop pine’, as it was an produced an extremely good quality final product, as well as balancing weight and strength. After research, and enquiry at Ramien’s Timber, the assured me the wood was extremely strong for its light weight in comparison to other types of wood available, this was crucial to me as I was throwing heavy batteries and other objects into my guitar body, it needed to be as light as possible before adding devices and batteries. Hoop Pine

13



Hardware Ideas

Research

SpeakersDeciding on a type of speaker to utilize within my design Is a crucial part of the overall function of the design, along with the impact it makes on the products success. To ensure that I pick the most appropriate speaker, much research is required to ensure the best results are achieved.The speaker that I wish to choose from must require compatibility to a wireless system, either already pre –installed or through means of accessing other kinds of wireless connectivity.• Fully developed speaker setup• Standard loudspeakers• Small speakers from existing products.

AmpIn today’s very advanced technology ere, amplifiers are extremely easy to access, and so too are they extremely small, which is a major benefit to me, as that is what I require. To power my speaker it is crucial for my amplifier to be able to produce as much power as possible with the use of a minimal power as possible.

BatteriesBatteries can be made in all shapes and sizes, however, for my project I require a 12v, with an aperture output of something greater than five, as well as being able to fin into the desired guitar shape.

SpeakersShielded 2" 10W 8-Ohm Full Range Speaker General Data:• Nominal Power Handling (Pnom)(W): 10• Max Power Handling (Pmax)(W): 20• Sensitivity (2.83v/1m)(dB): 78• Weight (M)(Kg): 0.12

Amp

Batteries

Hardware Decisions

14



Hardware Ideas

Research

Wireless Technology

In today’s high tech society, wireless technology plays a huge role in a wide variety of essential things that we take for granted every day, such as simple things like, television remotes, hands- free car devices and not to mention baby monitors. So with this technology being widely available, it became apparent to me to incorporate this element into my design. In today’s market, there isn’t a guitar available that has this radio frequency built into it, however, musicians today use wireless guitar systems to play concerts in massive stadiums. To keep up with modern society, it is essential to include this into my product.

Bluetooth Bluetooth® Audio Dongle

While the name may take you to question your better judgement of the product, this ‘audio dongle’, is an inexpensive, easy-to-install, way to incorporate Bluetooth® into my product.

Wireless Guitar System

While these ‘wireless guitar system’ are extremely expensive, they are of professional standard, and allow for the highest of quality sound to be produced. The question that needs to be posed to myself is, what kind of level guitar do I desire to produce? That answer, is one that professionals can play on stage, live, in front of a sell-out stadium crowd. To achieve this, a WGS must be included.

15



Justification of Decisions

Research

Speakers

Amp

Batteries

Bluetooth Bluetooth® Audio Dongle

Wireless Guitar System

16

I selected theses speakers as they are nice and compact, the look aesthetically pleasing and have a

10W output which is perfect for what I require.

The amplifier that I have decided to use is ideal as it can operate from a 12v battery and has a 5.8w

output for my speaker, as well as its compact and strong.

The battery that I have purchased for use within my guitar is the smallest, most powerful, longest lasting battery that will fit into my guitar. It is 12v and runs

2.5 amps, which is absolutely ideal for my needs

After research, the most suitable Bluetooth device for my product is one that was found on the JAYCAR

website as it transmits, at a range that is required for my needs and project.

This wireless guitar system is an entry level setup that was recommended to me to use at is is back, cheap

and is flexible in application.



Hardware Ideas

Research

Pickups As my product is a guitar it must incorporate pickups. However, there a wide variety of pickups available on the market, however they are separated into two categories: Passive and Active. As my guitar already requires a battery system, connecting ‘active pickups’ (pickups that require a power source), will not be a problem, however, it could significantly impact on the lifetime of the product in regards to playing time. This problem can be overcome by connecting it to a completely separate 18v battery system. The benefit to creating a separate power source allows for the original battery system to continue as is, without the drain of an extra source that it has to power. The downfall to that would be the constant battery change, as they will go flat. This will need to be sorted out during the testing stage of the project. Having two different battery sources however can often lead to many ‘oh crap, it’s gone flat’ moments, which are extremely embarrassing for the user. The two types of pickups, mainly used in the guitar design are ‘single coil’ pickups, or a ‘Humbucker’ pickup, which is more modern.

Single Coil PickupsSingle coil pickups were the original pickup developed, and it produces a bright , lively sound, however, As soon as you turn the volume up on your amp you will hear the AC hum start to increase and buzz throughout the room. Single Coil pickups produce a nice sounds, they will always have quite a bit of AC hum buzzing around while you play, which I personally believe is intolerable.

Humbucker PickupsThey are called Humbuckers because they cancel out (or buck) the AC hum that Single Coil pickups normally have. The Humbuckers are actually two Single Coil magnetic pickups wound in opposite directions to cancel out the hum and give a fuller more thick sound. You'll see a lot of Blues and Jazz players using Humbuckers because of the fatty bass sound they give electric guitars. Humbuckers have less tone but more bass, and because of the loss of tone they sound a bit mellow in comparison to Single Coil pickups, having said this, they produce a very ‘cool’ sound.

17



Hardware Ideas

Research

To assist me to pick a guitar pickup, I simply went to the ‘Dimarzio’ website, and found a very easy guide that helps select the type of pickup that most suits your needs. As a guitar requires two different types of tonal pickups, one at the ‘bridge’ of the guitar, and another at the ‘neck’, I did two different searches and came up with the following options.

Bridge

NeckAfter I used the ‘Pickup Picker’ tool. I continued to research the products that were suggested to me. As a result, I found myself in Orange at Landers Music, where I talked to Steve, who was the electric guitar guru, who was more than happy to provide me me expert advice. He was very fond of the Dimarzio brand pickups, as was i. He suggested to me, for the tone I want, which me a pop rock sound, nothing with too much distortion. The Air Classics from Dimarzio. So, with their kind support they sponsored and assistance I came to a final decision on the ones I was going to incorporate into my product.

18


Managem

entHSC Major Project – BOS Number: 26234026 19



Time Management

Project Management

Estimated time plan for year 12 Major Project 2013-14

Term Week Develop Project

Proposal

Develop Project

Management

Produce Project

Development Design Project

Realisation Prototyping Testing Production EvaluationDesign Project

Evaluation Hand In

Term 4, 2013

One Two

Three Four Five Six

Seven Eight Nine Ten

Eleven Holidays

Holidays

One Two

Three Four Five Six

Holidays

Term 1, 2014

One Two

Three Four Five Six


Eleven Holidays

Holidays One Two

Holidays

Estimated time plan for year 12 Major Project 2013-14

Term Week Develop Project

Proposal

Develop Project

Management

Produce Project

Development

Design Project

Realisation Prototyping Testing Production Evaluation

Design Project

Evaluation Hand In

Term 2, 2014

One Two

Three Four Five Six

Seven Eight Nine

Holidays

Holidays One Two

Holidays

Term 3, 2014

One Two

Three Four Five Six


20



Time Management

Project Management

Actual time plan for year 12 Major Project 2013-14Term Week

Develop Project

Proposal

Develop Project

Management

Produce Project

Development Design Project

Realisation Prototyping Testing Production EvaluationDesign Project

Evaluation Hand In

Term 4, 2013

One Two

Three Four Five Six


Eleven Holidays

Holidays

One Two

Three Four Five Six

Holidays

Term 1, 2014

One Two

Three Four Five Six


Eleven Holidays

Holidays One Two

Holidays

Actual time plan for year 12 Major Project 2013-14

Term Week Develop Project Proposal

Develop Project Management

Produce Project Development

Design Project Realisation Prototyping Testing Production Evaluation

Design Project Evaluation Hand In

Term 2,

2014

One Two

Three Four Five Six

Seven Eight Nine

HolidaysHolida

ysOne Two

Holidays

Term 3,

2014

One Two

Three Four Five Six


Less Time

More time

21

Certain parts of the process took less time than originally anticipated such as prototyping and project management, with testing taking much, much longer

than expected.



Financial Management

Project Management

When originally drafting my budget, it is clear to see that an overestimation of price was apparent. However, this provided me with relieve when a substantially less amount of money was spent than originally intended. The inclusion of where my products were sourced assisted me with keeping track of where things came from, if any problems occurred it was easy to identify where I needed to go to ratify the problem and look for a quick, and easy solution.

22


Development & Realisation

HSC Major Project – BOS Number: 26234026 23



Design Sketches

Design #1 PMIP- • This design is extremely simple.

Simple is always best. • This design’s shape is elegant and

easy for the user to hold and play. • It incorporates Bluetooth®

technology • Neck is a nice design M- • Lacks features. • The speaker isn’t acoustically

isolated. • Space seems to be limited, as

objects are arranged around the required guitar elements

• (pickups, bridge etc.) I- • This design is based on the Gibson

‘Les Paul’ style guitar. • Is an extremely cool looking guitar,

that sells well on the existing market, according to

• allansbillyhyde.com.au

24



Design Sketches

Design #2 PMIP-• Speaker is acoustically isolated.• Design Incorporates ‘XLR’ microphone input• Has the option of a detachable goose-neck microphone stand.• Includes Bluetooth ® options• Neck is perfect designM-• Space is limited• Would be extremely difficult to construct• Doesn’t include charging portI-• This design is based on the Fender Stratocaster®.• The design is of a solid build that is extremely durable.• First design that isolates the speaker from the pickups.

25



Design Sketches

Design #3 PMIP-• Ideal body shape.• Space is snug, but well fitted.• Incorporates Wireless Guitar System• Includes Bluetooth ® features• Speaker is Isolated from pickups• Easily constructed.• Design Incorporates ‘XLR’ microphone input• Has the option of a detachable goose-neck microphone stand. •M-• Would be extremely difficult to put together• Neck is quite ugly• Tone control is in an awkward positionI-• Guitar shape is based on Fender Telecaster® shape.• First guitar that incorporates the use of a ‘Wireless Guitar System’

26



Design Sketches

Design #4 PMIDesign 4, is a combination of all the ‘plus’ elements from my previous designs, and is the first step towards a finalised design.P-• Ideal body shape.• Space is snug, but well fitted.• Incorporates Wireless Guitar System• Includes Bluetooth ® features• Speaker is Isolated from pickups• Easily constructed.• This design’s shape is elegant and easy for the user to hold and play.M-• Tone Control isn’t included I-• Guitar shape is based on Fender Telecaster® shape.• This guitar design is going to be the ‘working prototype’ design.• Allows for more in depth research into products to be done.

27



Final Design Sketch

Design Sketches

28

Portable Electric GuitarEvidence of

Creativity




Evidence of Application to Model Development

Designing – Product realisation- Weeks 1-4 (Term 1) In order to bring my product to life, I decided to use CAD software and utilize the elaborate equipment available at school to make my product. This decision was made for many reason by the three main reasons behind choosing CAD programs to design my model were as following: • Mimics industry standards• Produces a quality product, which can be easily changed through design

process.• I wanted to gain a further insight into Computer-Aided technology.• I decided for my first model that I wanted to try two different drawing

programs, to draw two different style guitars, so that I can compare physical products from the two different drawing programs. This allowed me to essentially ‘kill two birds with one stone’, as I can see which program is best to use, as well as the best style of guitar.

• During the process, I found that the program Google Sketchup, was a much more basic CAD program to use, other than AutoCAD which is a much more in-depth, more powerful program, but much, much harder to use.

As AutoCAD was so difficult to use, I opted to use Google Sketchup as it was extremely simple to use and could produce a quality prototype. To draw both of these guitars, the same steps were taken, just different styles were produced. To start with, a 2D shape was created that was the outline of a guitar. Which took a lot longer than originally anticipated Then, extrude that shape up by 45mm (thickness of the guitar) After that, I added a rectangular piece to where the neck belongs. And to finish off, I added a few miscellaneous holes to represent pickups and other items.

AutoCAD

Google Sketchup

30




Physical Model Development – Weeks 4-9 (Term 1) To ensure my project was going to come together, I had to find some cheap wood for prototyping that was thick enough to accommodate my guitar. With the assistance of Mr White, he was able to rustle up some construction treated pine, that was 45mm thick (perfect). That pine was cut to length at 450 mm long and 190mm wide. Then the pieces were cut with a biscuit joiner, biscuited , then glued together before they were tightly pieced together in the sash clamps.

A problem was faced, when pulling the now joined pieces of timber out of the clamps was that they didn’t set evenly, one pieced was raised a little. This problem was easily averted, as we just put the block through the thicknesser to rid the slight step in the join.

To cut the first prototype, I phoned Denford (the company that produces the machines) and talked to Simon, the Head of Machining, and discussed the best was to go about machining my guitar. He recommended for me that I should use a vacuum table and quickly talked me through the steps to get my CAD drawing ready to be machined. With the assistance of Mr White, we imported my design from Google Sketchup, into a program called QuickCAM Pro, and ran the basic steps, so we could see if this was going to work for us. After getting through the set up, it provided us with a simulation of what it was going to cut. Then, to actually get this piece cut, we took the QuickCAM Pro file and opened that into VR Milling v5. This is the program that controls the CNC Router. Before we went any further, we squared our block on to the vacuum board we had put into the machine, and turned it on. We than ran the ‘g-code’ (machining instructions), and watched in anticipation for what was to happen. This process was repeated for the second guitar shape that was cut. Unfortunately it seemed as though, when we flipped the guitar to cut the otherside, it wasn’t lining up correctly we weren’t sure why… This issue had to be investigated further, I was at a stand still., untill I got a response from Simon at Denford.

31




Sourcing hardware, devices and corresponding information. Weeks 9-11 (Term 1) After adrenaline kicked in after actually making two prototypes, it was time to begin to order devices and hardware. Now confident this was going to go ahead, I purchased, 2 small loudspeakers and a Bluetooth Dongle from JAYCAR.

As well as these, a wireless guitar system, pickups, an amplifier, bridge, and a neck with a fret board from various suppliers. After all of these products had arrived except the pickups, that are excepted to be in by the start of term 2, I took all of my prototypes and research along with my new hardware to a very intelligent local electronics guru by the name of David Walters to find out if my idea, wasn’t one of the craziest one that he has heard, and of course, he found it quite outrageous. All I needed to ask him was, ‘Do you think this project is do-able?’… Apprehensively, I received a ‘maybe’.

David was extremely helpful as he directed be to be cautious about potential feedback from the speakers from the pick-ups as they’re so close, he so too advised me that I required a 12v power supply for my devices.

32




Modification to Prototype Design- Weeks 1-3 (Term 2) After receiving all my hardware, except for my pickups, which were supposed to be here by now, but seemed to be delayed, even after many phone calls the business, it was now time to incorporate cut outs for these pieces into the design. At first, I believed it be the best idea to place cutout in the front section of my guitar, and place a sheet of plastic over the top, as if it were just a large scratch plate, however. After the prototype was produced for that, I though that it would look quite ridiculous and also be impractical. So, I was back at the drawing board again. This time, I decided that the best option and way to hide this hardware was in the back. So, moved the perfectly fitted holes for the devices from the front of the guitar, to the back. This time, added channels in-between the cut outs, so that wires can be run to connect everything together when it comes time. Another feature that I discussed with Mr White was how to hide the hardware in the back, and he recommended to me that a piece of black Perspex would do the job. So, I set a 5mm offset in from the boundary of the guitar shape, then stepped it down 5m in the inside so that I could flush mount that Perspex.

33




Modification to Prototype Design- Weeks 1-3 (Term 2) Next, I had to draw the plate, as a 2D shape. The best part of CAD is the fact that I can make this plate a precise match to the cutout I have for it. All I had to do was copy the interal shape and fill it in, to make it solid, then save it as an STL file that can opened in Corel Draw, which controls the Plasma Cutter at school. After importing the file into Corel Draw, and setting up the plasma cutter with assistance from expert machines guru at the school Mr Miller, I was able to produce a physical plate that would fit directly into the guitar shape. However, it didn’t, for several different reasons… The ball-nose cutter on the CNC router wouldn’t cut fine enough for the plate to fit in.The file used had many flat faces on it and wasn’t perfectly round, which didn’t contribute to the plate fitting in the guitar.

So, I changed the cutter from a rounded ball-nose cutter to a flat, end mill cutter, which would produce a much better finish.

34




Continuation of Physical Prototype – Week 3 (Term 2)

As previously stated above, I was having machining errors with the lining up of sides, and I believe a way to avoid this in the future is to remove the suction vacuum table and replace it with a much lower tech, but much more reliable source of holding the block of wood in place. Clamps. Plain and simple. This way, I can ensure that the block of wood remains square and is in exactly the same position when it is flipped over. This is extremely crucial as it is directly relatable to the problem of misalignment. With these new clamps installed on the machine ‘bed’, it was now time test out if this solved my misalignment problem. As well as this, these clamps would hold the block much firmer to the machine, which is what is required. As well as new clamps, a new drill bit was used in the router. Mr white believed that an end mill, which has a flat bottom would make for a finer finish on my guitar.

35




Continuation of Physical Prototype – Week 3 (Term 2)With errors with machining continuing as demonstrated with the pictures, I was still dumbfounded as to why we were getting miss-alignment. So to try and avert this problem, I stopped the machining process and moved the block further towards the back. Then started it again until it had completed a run from back and forth, to measure whereabouts the program position was relative to the centre of the block. It was out by just 2mm still. So I moved it, rechecked, and it was good to go. Or, so I thought… Once the top half of the block was machined, it was now time to flip it over. To make sure I flipped it over in the correct spot, I drilled a hole in the very corner of where the CNC router had gone, so that when I would start cutting out the underside, I would be able to see whereabouts the router starts, relative to the hole that had be drilled through. Which is where it should start. When the machine had finished its cut some hours later, I returned to see that it appeared to turn out extremely well…. However, upon pulling the block out of the machine, I was quick to notice that it still was misaligned. This issue was extremely frustrating, as I really wanted to get this complete but I so too believe that that was a quality cut otherwise.

36




Continuation of Physical Prototype – Week 3 (Term 2)Disregarding the guitar isn’t aligned, if I were to evaluate the overall elements of the cut, I was say that this cut, considering the last ones, is an extremely high quality product that has everything incorporated well throughout. The accuracy and precision of the cut is phenomenal, with the use of a flat-bottomed drill piece, it has removed any unwanted material that the round bottom one had left behind, this was an instrumental breakthrough as it allowed for the guitar plate assembly to get driven into action. This cut was so accurate; it even sored the square facets that were on the Google Sketchup. This is great because it tells me two things. This machine is absolutely amazing, the level of detain is unbelievable. But it so too tells me that the guitar can no longer be drawn in Google Sketchup as the shape is too complicated for it to process. Whilst this proved to be another huge set back, it allowed for me to reflect, evaluate and analyse my process and decide whether I wanted to settle with a second class product, or work hard at producing the best product possible.

37




Continuation of Physical Prototype – Week 4-6 (Term 2) After a near miss on the last model, it was again back to the drawing board to continue the development. It was a much needed task to redesign the layout of my guitar and where certain objects were to reside. The old layout, wasted space and didn't’t provide for a an effective utilisation of the area, and it was chaos in order for wiring to occur as well. With a ‘sharpie’, the evaluation and analysis of the original design was done, and better way to use the space were crafted with the aid of Mr Miller and Mr White.

It was time to modify the changes we made on CREO Parametric, which was a new drawing program that was introduced to me by F1 in Schools Students at school. This program was easy to use, however very advanced in comparison to Google Sketchup. After the changes we made, a new billet was prepared and the process of machining began again, with attention needed to be payed to the model position inside the billet.

All in all the the machine process went quite well except at one stage where the cutter decided to do its own thing and take a direct route across the guitar body, Luckily, I was there to hit the emergency stop button and restart the machine. This was easily fixed with some wood, crafty disk sander work, and some glue.

38





The period of week 6 was spent painting and preparing my guitar and testing out what kinds of paint works best for achieving the look I was after. So to fill in the imperfections within the wood, I use an automotive filler that essentially, when sanded and finished, gave a plastic feel, which is what I was after. After the filler was sanded down and flush with the body of the guitar. It was now time to test on the previous guitars that I've made.

Using a ‘Filler Primer’, ‘Primer’ and an automotive ‘surface primer'. I applied 3 even coats to each model, and once dry gave them a light sand. Following a light sand, it was clear that the spray putty was the best paint as it sealed the guitar and removed any wood grain texture. This process was extremely time consuming, however, it was necessary to provide the best results come painting time.

39




Continuation of Physical Prototype – Week 7-8 (Term 2)

After I got my guitar prepared for a colour coat of paint with the previously selected spray putty. I got in contact with David Walters again as I required some assistance with a switch, David was more than happy to help out. He explained to me the concept of an electrical switch and how they operate, with a somewhat confusing diagram that I eventually figured out.

This step was imperative as it allowed my guitar to look ‘stock’, with adding a certain twist to the operation of the switch. Initially, the switch, which I pulled from an old guitar was used to change between pickups, however, I was going to use this switch to change between devices within the guitar.

So, after hours and hours, playing around with the guitar battery attached to the switch, and my version of a continuity tester, a light globe with two wires attached, I finally figured out what devices could attach to what part of the switch. The pointy and of the project was starting to bear its head, as the electronics are beginning to really test my mind, but the challenge and the constant struggle is a thrill

40




Continuation of Physical Prototype – Week 9 + Holidays (Term 2)

Mock Assembly Time!

After paint was complete it was time to mock assemble the guitar and the elements required for it. To start with, installing the heat sink to the amplifier, as all amplifiers tend to lose a significant amount of energy in heat, which was learned through year 12 physics. To do this, I attached a piece of heat sink with screws and used a mini angle grinder to cut it down to size. Once it was cut to size, I simple attached a grinding dick and smoothed off the metal, followed by a file.

Then I added all the elements required to be screwed to the top surface , such as speakers, pickups, switches, etc. To do this, many new holes were drilled with measurements taken so that the correct holes could be adjusted on the CAD version.

A problem that was very noticeable was the alignment of the bridge, which is where the strings essentially start. It was clear that he bridge wasn’t square with the neck, which would result in strings not being ‘in situ’ when it comes time to ‘string up’ the guitar. So I added a small depression, 1.5mm to be exact, of the size of the bridge so it would sit perfectly

41




Continuation of Physical Prototype – Week 1-2(Term 3)

Again, it was time to rip up some hoop pine on the table saw, with the assistance of Mr White. This time to ensure a quality join of the wood, I put the wood through the thicknesser and ensured a flat, smooth surface, which the pieces of wood could be glued together well. This process took some time.

Following the cleaning of the wood surfaces, I lay the board flat on a table and align them without glue to see how they fit together, which was perfectly . So, I applied a generous amount of glue to the wood and began to stack the billet together. Then, I placed the glued billet in the sash clamps, and tightened them evenly so that a quality block was achieved.

Now it was time to begin the machining process, however, there was a slight issue. The machine would operate. This was a poor timing for a machine to break down. So Mr White and l phoned Denford and enquired with them on how to ratify the problem, however, they didn't’t have any idea, so, we had to wait for them to get in contact with the head office which, of course, was in the UK, and weren't able to get any information out of them until the next day, due to the time zone shift.

42




Continuation of Physical Prototype – Week 1-2(Term 3)

When an answer was finally deliberated, we were asked to perform radical maintenance on the machine, via phone instruction. We were asked to check several leads and circuits with a continuity test, however nothing seemed to be the matter, then we were asked to pull the motherboard out of the machine and swap it with another smaller machine that we had at school, however, after hours of swapping them over, Mr white and I still could solve the problem The technical assistant at Denford, would need to contact head office again to enquire further. This would continue to delay production.

Finally, the next day we received an answer with possible merit. The emergency stop switch had somehow broke, and was stuck on ‘stop’, regardless of its physical position. So, as it happens, an electrician was in the right place at the right time, changing lights at school, so Mr White and I asked if he could help. Under instruction over the phone from Denford’s technical assistant, he placed a temporary bridge over the emergency stop so that the machine can continue with the machine to be fixed at a later date.

I could now finally begin machining after a week of delays that were not needed, nor allowed for in the time schedule that I had been workinf so diligently to.

43





Week three of term three, saw again, more trouble, with the theft of my guitar neck, which proved to be a massive inconvenience, time and money wise. This meant I needed a new neck, and fast. So I jumped straight onto ‘Gumtree’, to find a guitar in my area that I could pickup nice an cheaply, asap. I ended up finding an old Ibanez, which I managed to pick up for dirt cheap at $50, which even came with a guitar case; bonus!

After the ‘high’ of a good bargain, I low wasn’t far away. The neck didn’t fit, it had a small taper and wasn’t the same length as the previous neck that I had designed my guitar around. Due to acoustics, the 12 th fret of the guitar neck, must sit exactly in-between where the guitar strings resonate, and of course, this neck didn’t fit acoustically, so I had to move the bride 40mm closer to the neck hole to ensure that it would work, and resonate as it should. I thought this could be fixed by just removing material, and having the bridge cover it up, but after reconsideration I realized that I would still have to change the neck, and also, my perfectionistic nature advised me against the move.

This Perfectionistic nature advised me against the move. meant, a re design, again!

44





Luckily I created 2 billets at the last stage so that I could quickly make the much needed changes and machine my final guitar! ASAP I went through the machining process for one final time and watched eagerly for the guitar to have finished cutting.

Without any further adue, I was quick to begin sanding and patching any impurities in the wood so that paint work could begin! So after I had filled, I sanded, then sanded, and again, sanded a little more till I was happy with the guitar. After the sanding was complete, I applied 3 light coats of ‘Primer Filler’ to the guitar, then sanded the paint back once dry. To finish, I filled a few more small imperfections and gave the guitar 2 more coats of ‘Primer Filler’. Things were starting to look up now and the final product was in sight.

45





After getting a quality finish on the primer after a light sand with some 1500 ‘wet n dry’ sand paper, I added 2 coats ‘surface primer’ to allow for the red to sick really well to the guitar body. As the name suggest the surface primer is designed to allow a top coat to stich chemically well to the other paint if applied within a certain time period, which in this case was after 12hr and before 72.

After purchasing the ‘cherry red’ paint, I quickly set about getting some colour on the guitar, as time was of the essence. So I added 1 part of thinners to every 4 parts of red, which would give me a nice consistency and flow out of the spray gun.

After mixing paint, I set my air compressor pressure gauge to 30 psi at the gun, which is effectively the pressure of the air, after its been through the hose. Initially, I was extremely happy with the first coat, so I applied another light coat ,within the hour as directed, then let it to cure for 6 hours. The next day, I recoated the body 2 more time, each time 6 hrs apart. One final inspection, I noticed that the air gauge that I had set was no longer 30 psi at the gun, it was at 45psi. Which gave me some slight dimples in the paint work, however, the was overcome with some cutting polish and a buffer wheel.

46





I decided that a plain red guitar, simply doesn’t suit this project as it is quite the opposite of plain. So, I contacted a local artist who is showed some photos to of what I would like done on guitar. I gave them specific instructions that I only wanted something small that would hint to the potential buy that this product is not your average guitar.

Once receiving the guitar back I was more than happy with the result, it was exactly as I asked and was of perfect size. So, to protect the art, I applied a clear polyurethane coat to the guitar to protect the final coat.

47




Continuation of Physical Prototype – Week 5 (Term 3) This week was by far the biggest week that was involved in the entire project. With the entire electronics to go in and the product to be assembled. The pressure of my research and testing was now going to be extremely crucial to get this to work. To start with, I installed all of the hardware to the body, and then began to asses how this was going to be wired up. So, what I did was a drew up a schematic and a wiring diagram to assist me to put this thing together. So in order to do that, I again sourced the assistance an knowledge of David Walters to assist me with a few questions that I had before I started.

Ever since the purchase of the Wireless Guitar System, I’ve known about adding 12v to it, as it was designed to run on a single battery which is powered at 1.5 volts could do some pretty serious damage. So I asked David where I could find a voltage regulator, and he told me that he could make me one in about 10 mins. So with a circuit board, 2 LEDS which draw volts out with the use of OHM’s LAW, (physics knowledge), I was able to calculate the amount of resistance required so that we could make a voltage regulator.

For the Bluetooth device, I used the circuit board out of a usb car charging adapter, as through not only my basic knowledge of electronics, as well as testing with a multimeter did I discover it steps down 12v to 5, which is the power required for and USSB device.

48





Once all my electronics were in order, I made a last minute decision to add a preamp, to boos the power to all my devices, just in case. So I went down to the newly opened JAYCAR store and purchased a ‘Pre-champ’ kit, which was perfect for what I needed, the team were only too kind to help me out. So, I pot it together with some solder and a set of instructions, and to test it if it was working as it should, I found myself in the science block and with the head teacher of science Mr Eddy, an oscilloscope and a device that produces a sine curve. So I attached that to the audio input part of the amp, and I attached the output to the oscilloscope to see if it would work, and yes, it worked great!

All there was to do now was to make room for it in my guitar, using a mortise drill, as well as a portable handheld belt sander, and install it with the rest of the components to my guitar.

49





Next I had to simply connect and solder everything together, which remarkably went extremely smooth.

1. Cut the connecter for the wireless mic to size that it fits in properly into the slot.

2. Attach the Battery to the switch and ground the negative.3. Attach power to the Preamp, Amp, 1.5v regulator to the WGS, and

finally the 5v regulator to the Bluetooth. 4. Next I connected the speakers to the amp, and the potentiometer.5. I then connected the pickups together and wired them in parallel

according to the wiring diagram that came with them.

50




Continuation of Physical Prototype – Week 5 (Term 3)The final step required to finish the product was to create a Perspex back to fit the designed cut out so that all of he wiring can be hidden behind it.

From the CAD drawing, all else was removed but the surface which the place were to sit in, therefore I had a face that was exactly the right size I needed for a piece of Perspex, to cover my electronics. However, it was not too simple to make that surface a 3D model as it needed to be completely hollow to do so. So removing all the interior shapes was needed. Now that I had an outline left, I was able to extrude the shape by 3mm, which was the thickness of the desired material. The to get a file to get cut on the Laser Cutter, it had to be saved as a DXF and transferred into Corel-Draw. (the program the laser cutter requires to operate).

As a trial, I used MDF instead of plastic.

Once I had finally cut one and realized that it didn’t quite fit, Mr White alerted me to the fact that the auto-focused laser. So I tried a gain to cut another, however it didn’t seem to quite fit either.

Mr White and I began to play around with the scaling of the model until we found a size that fits perfect, which was time and resource consuming.Eventually we used the size we liked and cut a piece of Perspex.

All there was left to do was pre-drill screw holes, and holes for volume control and bluetooth power.

51



Major Designs

52



Major Designs

53



Major Designs

54



Major Designs

55



Final Design

56



Equipment

Identification And Justification Of Ideas And Resources

57

Quick Grip Clamps- These clamps provide a quick, easy method of holding things together whilst gluing without sacrificing strength and functionality. They also provide a simple solution when securing timber when using tools such as the Domino Machine.

Biscuit Machine-The biscuit machine has the ability to cut precise cuts in a variety of timber surfaces. It also allows for the depth to be manually adjusted to suit the product.

Circular Saw- The circular saw provides a neat, straight cut on a large variety of timbers. It also enables large pieces of timber to be cut, such as sheets of MDF, that other saws would not be cut. This is due to the large table that is attached to the saw.

CNC Laser Cutter- This machine allows for the piece to be easily designed on a computer and then sent to the cutter where the design is quickly and effectively cut using laser technology.

Drop Saw- This machine allows for long lengths of timber to be cut precisely. It also has the ability to cut timber on angles; such as the curved rails. The drop saw was used extensively during the manufacture process due to its simplicity.

Sash Clamps- Sash clamps are highly effective when large pieces of timber need to be held tightly and were used during the gluing process involving the side rails. They are also steady during the drying time.

Bandsaw- The Band Saw allows for small pieces of timber to be cut

quickly and easily. It also provides a high level of control over the direction of the cut; something that is especially important when cutting curves. The bandsaw also has the ability to cut large thicknesses of timber.

CNC Router- CnC = Computer Numerical Control. a computer ‘controller’ reads g-code or machine language instructions and drives a tool. The nC (numerical control) program is a detailed set of step by step instructions that tell the machine which path to follow and which operations to perform.

Angle Grinder -A device with a rotating abrasive disc, used to grind, polish, or cut metal and other materials.

Multimeter- an instrument designed to measure electric current, voltage, and usually resistance, typically over several ranges of value.

Continuity Tester- A continuity tester is an item of electrical test equipment used to determine if an electrical path can be established between two points; that is if an electrical circuit can be made.

Wire Strippers- A tool for removing the insulation from electric wires.



Outsourcing

Identification And Justification Of Ideas And Resources

58

Throughout my project, I attempted to do everything myself as it was my HSC project, at times I asked for help from certain professionals to guide me in the ways, however, there was a few things that were beyond my limits.

• 1.5v Voltage RegulatorI was determined to do this myself, however I was unable to do so as my knowledge and skills in electronics were not great enough to be able to construct such a necessary and essential device, on which I would heavily rely on for safety. David Walters of David Walters Electronics assisted me with this.

• Fixing the CNC RouterAfter many attempts and hours spend, working on the router Mr White and I were not able to get the router working properly and it was crucial to get it up and running, so to prevent time loss, an expert electrician was used to do the job.

• Guitar Art Art is certainly not my forteit, I knew that I had to get someone to assist me with this aspect of the guitar, so I lined up local artist Kate Newton, who painted my guitar for me, quickly and to an extremely high standard.


Evaluation




Survey Results

60

In order to successfully complete my product evaluation I distributed a total of 23 surveys to a large variety of people, ranging from students at school, music students, friends as well as professional local music acts, with varying ages and genders to ensure that I was addressing all aspects of the potential market. Below, can be seen the results from these surveys.

Feature Evaluation-In the survey, recipients were questioned on both their rating of various aspects of the product as well as the influence that certain features will have on their purchasing decisions; each aspect was given a score out of five. Please note that both safety and cost were not rated in the survey as this would require a cost to be supplied, and long times of testing would need to be needed. As the provided graph demonstrates the overall influences that mainly affect the decisions are functionality, cost and sound. Throughout the survey, results demonstrates that the guitar looked aesthetically pleasing, whilst the sound lacked in quality a little bit. This can be due to the sensitivity of the speakers.

Funtionality Aesthetics Sound0

1

2

3

4

5

Aspects Present in Job

Average

Funtionality Safety Aesthetics Sound Cost0

1

2

3

4

5

Purchasing Influences

Average



Survey Results

61

Survey Range

The survey was handed out to 23 different, and random people. This is essential as it creates a broader, more diverse and accurate set of results when I comes to what works, what has been successful and what hasn’t. It was crucial to ask of the survey recipient their musical ability and musical interest as it would allow me to gain greater insight to what various levels of musicians think of the product.

Analysing the survey results it is apparent that all people surveyed have some interest in music, with over 20% of people who play the guitar. musicians are crucial as well as they provide a musical insight into what it sounds like, as they have a musical knowledge and background as well, regardless of their specific interests.

Most people who were interviewed play music for fun, which is a representation of the musical community. It was essential to survey professionals and their opinions as they have the most knowledge about music and their opinions are most valued.

Musician Guitarist Music Fan Guitar Enthiusist None0.00%

20.00%

40.00%

60.00%

80.00%

100.00%

120.00%

Musical Interests

Musical Ability

NoneBegginerPlay for funProfessional



Survey Results

62

Price Evaluation-Recipients were also asked to select an option based on the amount that they would be willing to pay for the product. Basically what was done was an average of all of the total price people who completed the survey would pay. This figure ranged from$500, to $2500. To be honest, I thing that the average price was a little higher than expected, however, looking at regular guitar prices on the market, this is a reasonable price to pay for a unique product.

_x0001_$0

200

400

600

800

1000

1200

1400

Average Price

Price

Have you ever noticed a similar product?

YesNo

Comparison Of Existing Products-The survey also analysed how the product compared to the recipients existing product (if applicable) and found that 100% of people have never noticed a similar product. This suggests that the product would have the ability to be successful in the market.




Aesthetics1. Is the finished product aesthetically pleasing?According to the survey results, as well as public comments and personal review, I believe it is easy to say that the product is aesthetically pleasing and not only is of market quality, but so too has a unique look to it that separates it from existing market products. Thus, the product is aesthetically pleasing.

2. Does the final product meet market quality finishing?As previously stated comments were specifically made on the returned surveys about the finish quality of the guitar, and with my perfectionistic nature, I believe that the product does meant market standards and is the best possible product that I could have produced.

Function1. Does the final product produce sound from the speaker?Yes. The product does produces noise from the speakers, however, due to the sensitivity of the speakers and the pre-amp that was installed the volume has to be turned town on the volume control. Yes, it does produce a sound, and it produces a sound that I'm very satisfied with.

2. Is the final product able to connect wirelessly to existing sound systems?Yes. The product does connect wirelessly to existing sound systems through both the Wireless Guitar System, as well as the Bluetooth dongle. Having stated that, according to the returned surveys, the Bluetooth, is ‘fiddly’ . However, I've personally never had a problem with it.

3. Is the shape (body) of the guitar comfortable to play?The shape molds around your arm and sits comfortably in the players body contours, it provides for a comfortable playing experience.

Safety1. Is the product safe?During assembly, I took several steps to ensure that the product was safe and it wouldn’t electrocute or injure anyone. The installation of the voltage regulators were crucial steps to provide a safe and professional product that wouldn't’t hurt or injure any user.

63

Cost1. Is the final product cost effective and a viable purchase for the target

market?Yes, the final product was reasonably cheap to make considering prototypes are using very expensive to make. Having stated that, the product would be more cost effective if produced in a greater number.



Final Evaluation

64

The design brief has been successfully met as can be seen by the survey results and the criteria to evaluate success. In conclusion, the product could be sold for approximately $1200 based on an average from the survey recipients Marketing should also be established to target the objective market of musicians of all skill levels.

What worked well?

Many elements worked well, however, I am most satisfied with the Wireless Guitar System that has been incorporated into the body of the guitar. The use of CNC machining I believe was essential to producing this product as it is not only the most accurate, but most versatile and flexible. Without it, I would have been capable of producing such a product!

What would be changed if it were to be done again?

If I were to redue the guitar, I would most certainly begin with using a sophisticated drawing program such as Creo Parametric. The drawing program is essential to producing a quality guitar. Another element that I would change would be the speakers. I would purchase speakers that weren't so sensitive to sounds, this would allow for a better range of volume control without feedback.

Overall, I'm extremely satisfied with the product and the way it has turned out! I personally couldn’t have done a better job, and I'm ecstatic with the end result.

Portable Electric GuitarAppendix




Appendix

66

TypeBibliographyName Source

Video Doc Physics - Electric Guitar Pickup Coil to Amplifier to Speaker Voice Coil Theory

http://www.youtube.com/watch?v=-colsdWF4-s

WWW Types Of Electric Guitars – Solid Body http://www.guitarcommand.com/types-of-electric-guitars/

WWW Panaray® 402® Series II http://worldwide.bose.com/pro/en_us/web/panaray_402_series2_loudspeaker/page.html

WWW Guitar construction http://www.berketaguitars.com/construction.html

WWW Hand-Made Guitars http://www.glennbirdguitars.com.au/hand-made.php

Video CNC Guitar, Australian Made Guitars, Acoustic Electric Guitar Maker

http://www.youtube.com/watch?v=LLNeA1oUCGc

WWW Bluetooth Dongle http://www.jaycar.com.au/productView.asp?ID=AA2085

WWW eBay www.ebay,com.au



Appendix

67



Appendix

68



Appendix

69



Appendix

70