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3 D Printing part finishing We have two 3D printing systems that we produce metal and plastic parts. We are finding the surfaces on both types of parts very rough. What finishing system would you recommend to smooth our surfaces? Surface refinement of complex shaped 3D printed parts is a good fit for mass finishing. Surface refinement processes take time but are very effective. We recommend higher energy systems to reduce time cycles. There are two machines that work well with 3D part refinement.
1. High-‐speed vibratory tub machine (2-‐3000 rpm’s) 2. Centrifugal disc high energy systems
Vibratory Tub Centrifugal Disc Ceramic tri-‐star media 3D printing produces surface finishes in the 120-‐300 Ra range. With high energy mass finishing, use a fast cut medium sized 5/8 x 5/8 tri-‐star ceramic media. 3D surfaces on plastic and metal parts can be refined to as low as a 16Ra. This will take 6-‐8 hrs in the high-‐speed vibratory tub and 2-‐4 hrs in the centrifugal disc machine.