I'm working on the design of a plastic part that will be painted black in a matt finish. What should I specify for the surface finish? SPI C-1? The reason it being painted is because its a backlit display panel so it will need to be translucent to carry light to text and graphics. Clear part, painted white, painted black, laser engrave black to reveal text/graphics. Since mechanical properties like strength isn't an issue I was thinking clear ABS. Paintability and good adhesion and a good looking part with minimal shrinkage making unsightly sunken areas are priorities. Should I consider another material?
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