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Mixing Formulas for Hot Bluing

Manganese Parkerizing Solution
manganese_phosphate

on eBay
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Hello all,

I do some Factory Hot blueing on shotguns in mirror polish grade for the last 7 years, and I got the job quite well, but now I want to turn to Parkerizing, since most of the hunters over here use the guns near salty sea water, they need a good tough coating, and what's better then BLACK or GREY Parkerizing!.

All I need to know is, the exact or nearer Mixing formula for the above 2 colours, if anyone can help me I'll appreciate a lot,I can build all stainless steel baths needed for the job, I tried all means to find some formula, but never found it in its exact mixing measures.

All help is welcome

Thanks to all.

Max M
- Mass., USA
2001

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