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Time Saver, then Direct to Silk Screen? Or must we etch/chromate?

Q. We are a small sheet metal fabricator and outsource silk screening. We almost always time save (wide belt sanding) a part prior to screening and almost always clear chromate or etch the part prior to screening. Is the chromating/etching necessary? We do it to clean the part but should the part be clean coming off the timesaver or do most folks have an in-house cleaning operation prior to screening? I am trying to save time and cost but do not want to sacrifice quality.

Richard Webb
QA - Bloomingdale, Illinois USA
March 24, 2017

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