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Sharing your passion for making jewelry.Products. Service. Know-how.
800.545.6566 www.riogrande.com
Making Beads Using a Two-Part MoldBefore You BeginUsingatwo-partmoldcompoundsuchasRioCold-Moldallowsyoutocreateaflexiblerubbermoldthatyoucanusetoreplicatedesignsandjewelrypieces.Moldcompoundisavailableintwoparts(usuallylabeled“PartA”and“PartB”).Whenequalamountsaremixed,thecompoundcurestoaflexiblerubbermold.
Oncethemoldcompoundpartsaremixed,thecuringprocessbeginsimmediatelyandyou’llhaveonlyafewminutesofworkingtime,somakesureyouhaveeverythingreadybeforeyoubeginmixing.Note:Two-partmoldcompoundshaveabuilt-inmoldrelease,soonceyou’vefinishedcuring,theitemcanbeeasilyremoved.Thecompoundalsowon’tbondtoitselfaftercuring,soit’seasyforyoutocreatetwo-partmolds.
Totestifthecompoundhascuredcompletely,lightlypressyournailintotherubber.Ifitleavesamark,thenithasnotcompletelycured;themoldwillfeelfirmyetslightlyrubberyoncecompletelycured.
Note: Objectstobemoldedshouldbesmoothandfreeofundercutsormajordefects.Objectssuchasriverrocks,marblesandothertypesofdecorativeglassmakeexcellentmolds.
Creating A Smooth Saucer BeadTomakeasmoothsaucerbead,useamarbletocreateyourmold.
1. Takeaballofeachcompound,approximately¾”diameter(abouttwicethesizeofthemarble)andmixthetwopartstogetheruntilthecolorisuniform.Rollthecompoundintoalogshapethat,whenstandingonend,istallerthanthetwomarblesbeingmolded.Lightlypressthemarbles,oneatatime,intothecompound(pressuntilhalfofthemarbleissetintothecompound);becarefultonotpressallthewaythroughthecompound.Ifnecessary,tapthemoldcompoundaroundthecircumferenceofeachmarbletoitmakescontactwithallsides.Makesurethemoldcompoundislevelaroundeachmarble.Allowthecompoundtocureforapproximately15minutes(orasdirectedbythemanufacturer).Removethemarbleswhenthemoldiscured.
2. RollyourPMC+®three-cardsthick.Useadimeorothertemplatetocuttwodiscs.Placeoneofthediscsunderplasticwraptokeepitmoist.
3. Usingyourfingertip,gentlypresstheotherdiscdeepintothemoldtocreateadome.Removetheotherdiscfromtheplasticwrapandrepeat.SetasideandallowthePMC+todry.Tohastendrying,useafooddehydrator.
4. Oncedry,removethePMC+fromthemold.Usethenailfiletosandtheedgesofbothdomesflat.Asyou’refiling,periodicallyplacethedomestogethertomakesuretheedgesmatch.
5. Dipthepaintbrushinwaterandrunitalongthesandededgeofeachdome.
6. ExtrudealineofPMC+®slipfromthesyringeandrunitalongtheedgeofoneofthedomes.
7. Pressthetwodomestogether,formingasaucerbead.UsetheblendingtoolfromthePMCtoolkittoblendanyslipthethatcomesoutattheseam.
supplies:PMC+®(seeyourRioGrandecatalogs)PMC+®slipsyringe(#100-884)RioCold-Moldcompound(#701-046)Worksurface(#111-565or#111-567)PMC®toolkit(#111-411or#100-965)DimeorroundtemplatesuchasaKlayKutter(#111-390)SandingpadsPolishingpaperNailfiles1mmdrillbitPinviseSlipWater
PlasticwrapPermanentmarkerSmoothriverrockTwomarblesTexture(optional)
Making Beads Using a Two-Part Mold8. Setthebeadasideandallowittodry.Oncedry,ifthereareanygapsintheseam,usethesyringetofilltheminwith
PMC+slipandblendsmoothuntiltheseamisnolongervisible.Allowtheseamtodry.
9. Useasandingpadornailfiletosandtheedgesoftheseamandthedomedsurfacesofthebeaduntilthebeadissmooth.Addsurfacedecorationsifdesired.
10.Findthecenterofeachsideofthebeadandmarkitwithapencil.Usinga1mmtwistdrill,gentlydrillaholethroughthecenteronbothsides.Note:Remembertoletthedrilldothework;ifyouusetoomuchpressureonthedrill,thebeadmaycrack.
11.Supportthebeadinvermiculiteandfireat1650°Ffor10minutes.
12.Usethebrassbrushtocleanthefiredbeadandfinishasdesired.
Creating A Textured Saucer Bead1. FollowStep1under“CreatingASmoothSaucerBead”tomakeyourmold.
2. Mixanotherbatchofmoldcompoundusingthesameratioasyouroriginalbatchabove.PressthelumpintothemoldcreatedinStep1,ensuringthecompoundgoesallthewayintothedomedspace.Allowthemoldtocure.Oncecuredprythetwomoldsapart;younowhaveapositiveandnegativemoldoftwomarbles.Toformthetexturedbeadsyouwillbeusingthepositivemold.
3. RollyourPMC+®three-cardsthick.Textureasdesired.
4. Useadimeasatemplatetocuttwodiscs.Placeoneofthediscsunderplasticwraptokeepitmoist.
5. GentlydrapetheotherdiscoveroneofthemoldeddomesanduseyourfingertipstocontourthePMC+®aroundtheshapeofthedome.Removetheotherdiscfromtheplasticwrapandrepeat.SetasideandallowthePMC+todry.Tohastendrying,useafooddehydrator.
6. Oncedry,removethePMC+fromthemold.Usethenailfiletosandtheedgesofbothdomesflat.Asyou’refiling,periodicallyplacethedomestogethertomakesuretheedgesmatch.
7. Dipthepaintbrushinwaterandrunitalongthesandededgeofeachdome.
8. ExtrudealineofPMC+®slipfromthesyringeandrunitalongtheedgeofoneofthedomes.
9. Pressthetwodomestogether,formingasaucerbead.UsetheblendingtoolfromthePMCtoolkittoblendanyslipthethatcomesoutattheseam.
10.Setthebeadasideandallowittodry.Oncedry,ifthereareanygapsintheseam,usethesyringetofilltheminwithPMC+slipandblendsmoothuntiltheseamisnolongervisible.Allowtheseamtodry.
11.Useasandingpadornailfiletosandtheedgesoftheseamsmooth,beingcarefultonotsandyourtexture.
12.Findthecenterofeachsideofthebeadandmarkitwithapencil.Usinga1mmtwistdrill,gentlydrillaholethroughthecenteronbothsides.Note:Remembertoletthedrilldothework;ifyouusetoomuchpressureonthedrill,thebeadmaycrack.
13.Supportthebeadinvermiculiteandfireat1650°Ffor10minutes.
14.Usethebrassbrushtocleanthefiredbeadandfinishasdesired.
Creating A River Rock Bead1. Taketherocktobemoldedanduseapermanentmarkertomarkalinearoundthecircumferenceofit.Thislinewillhelp
youdeterminehowdeeptherockshouldbepressedintothemixedmoldcompound.
2. Takeequalpartsofbothpartsofthecompound(eachpartshouldbeaboutthesizeoftherockyouaremolding).Mixthepartstogetheruntilthecolorisuniform.Rollandformthecompoundintotheapproximateshapeoftherock.Note: Theformmustbetallerthantherockbeingmolded.Lightlypresstherockintothecompounduptothecircumferenceline;becarefultonotpressallthewaythroughthecompound.Ifnecessary,tapthemoldcompoundaroundthecircumferenceoftherocksoitmakescontactwithallsides.Makesurethemoldcompoundislevelaroundtherock.Allowtocureforapproximately15minutes(orasdirectedbythemanu-facturer).Testthecompoundtomakesureitiscuredcompletely.
800.545.6566 www.riogrande.comSharing your passion for making jewelry.
Products. Service. Know-how.
Making Beads Using a Two-Part Mold3. Oncethecompoundhascured,removetherockandinspectthemoldtomakesuretherearenoairbubblesorother
imper-fections.Inserttherockbackintothemold.MixanotherbatchofmoldcompoundatthesameratioasinStep1androllitintoaball.Pressthecenteroftheballdownontothecenteroftherockandformthecompounddownandaroundtherocksoit’scompletelycovered.Gentlypresstheedgesintowardtherock.Allowtocureforapproximately15minutes(orasdirectedbythemanufacturer).
4. Oncecured,prythemoldapartandremovetherock.
5. RollyourPMC+®three-cardsthick.PlacetherolledPMC+intooneofthemoldpieces.Useyourfingertiporknuckletogentlytapitintoplace,makingsureallthePMC+ismakingcontactwiththemold.UseacraftknifetotrimexcessPMC+fromtheedgesofthemold.
6 Repeatstep5withtheotherhalfofthemold.
7. SetasidethetwomoldsandallowthePMC+®todry.Tohastendrying,useafooddehydrator.
8. Oncedry,removethePMC+fromthemold.Useasandingpadornailfiletosandtheedgesofbothdomesflat.Asyou’refiling,periodicallyplacethedomestogethertomakesuretheedgesmatch.
9. Dipthepaintbrushinwaterandrunitalongthesandededgeofeachdome.
10.ExtrudealineofPMC+®slipfromthesyringeandrunitalongtheedgeofoneofthedomes.
11.Pressthetwodomestogether,formingasaucerbead.UsetheblendingtoolfromthePMCtoolkittoblendanyslipthatcomesoutattheseam.
12.Setthebeadasideandallowittodry.Oncedry,ifthereareanygapsintheseam,usethesyringetofilltheminwithPMC+slipandblendsmoothuntiltheseamisnolongervisible.Allowtheseamtodry.
13.Useasandingpadornailfiletosandtheedgesoftheseamsmooth.Addtextureordecorationsasdesired.
14.Findthecenterofeachsideofthebeadandmarkitwithapencil.Usinga1mmtwistdrill,gentlydrillaholethroughthecenteronbothsides.Note:Remembertoletthedrilldothework;ifyouusetoomuchpressureonthedrill,thebeadmaycrack.Iftheholesareattheseam,theseammayopenslightly.Ifthisoccurs,simplywetthecrackwithwaterandfillwithslip.Allowtodrycompletely.
15.Supportthebeadinvermiculiteandfireat1650°Ffor10minutes.
16.Usethebrassbrushtocleanthefiredbeadandfinishasdesired.
800.545.6566 www.riogrande.comSharing your passion for making jewelry.
Products. Service. Know-how.
©2011 The Bell Group, Inc. All rights reserved.
800.545.6566 www.riogrande.comSharing your passion for making jewelry.
Products. Service. Know-how.
Making Beads Using a Two-Part Mold
Notes