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topic 10721

Metal prep prior to painting for refinishing firearms


Hello, I am refinishing firearms. Currently I only refinish parked firearms and use gun kote from KG industries. I am looking for a process to treat metal prior to painting that will provide a good adhesion for the paint. I have been told that Phosphoric acid may be what I want? Also can anyone recommend another product for refinishing that provides good resistance to wear and the elements.

Any help would be greatly appreciated.

Gun parts & schematics at Brownell's


William Edward Sayre
- Alcalde, New Mexico, USA


Phosphoric acid by itself won't give the pre-paint finish you're looking for. Find a good iron phosphate cleaner/phosphatizer combo for best results. By the way - a hot black oxide coating is also a good base for paint!

Dan Brewer
chemical process supplier - Gurnee, Illinois

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