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Message: <blockquote data-quote="mtngunr" data-source="post: 4340697" data-attributes="member: 46104">I've done my own back years ago, but also used acetone to degrease, bead blast if a smooth surface, and then a phosphoric acid etch to prep the surface, and then added manganese dioxide to the phosphoric acid etch (the etch diluted with distilled water), and it needed to be done outside due to acid fumes and then hydrogen gas release meaning also an outdoor burner for the tank/pot....but pharmacies and hardware stores ain't what they used to be, and Brownells isn't the only supplier of kits, but kits only contain a cleaner/parkerize solution/oil solution....and suppose I'll just run with that on the gas kitchen stove with window open.The shaft grinding lead is interesting, but nothing like that around here, only two machine shops of any variety within 30 miles and them booked solid as I found on another need, and easier to just order a kit than work phone and internet tracking down a shaft grinder who also would do a gun part, laws getting sticky on who can work on guns.</blockquote>