The relationship of a cusp or a bevel to metal thickness depends on one-sided or two sided etching. The Chemical Milling Process PPFI's metal etching process uses Computer Aided Design and photographic imaging to produce precise, thin metal parts. The metal is coated with photoresist and exposed to ultraviolet light. The metal is passed through a developing unit. The developed metal is then sent through a chemical etcher.
All products go through a final, rigorous inspection.
We also inspect after each phase prior to the final inspection stage, which assures the quality we maintain. You are also welcome to tour our facility. There are no definite, absolute design rules for etching tolerances. The good news is our process can often provide the best solution for your needs. Our photo-chemical machining process tends to round off corners.