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Old 07-17-2016, 09:29 PM   #2
Tom Wesenberg
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Join Date: May 2010
Location: Mpls, MN
Posts: 27,480
Default Re: Darkening original engine bolts...

I use G-96 gun blueing to darken mine. It does a great job, and as soon as I finish with the blueing I use ATF to oil them and keep the rust away.

I never had luck with Birchwood-Casey, but a guy in our club has made some nice specialty Model A tooling and used BC to darken the parts, and they came out perfect. I must have had a bad jar of the liquid.
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