Cold Blue
I have a S&W Airweight 37 that the cylinder and the barrel is more gray than blue. I was thinking I could cold blue the parts, but have had mixed results in the past with cold bluing. What brand do you guys recommend and what procedure do you use in its application?
Oxphoblue - Brownell's
by Hobie 
, Shenandoah Valley of Virginia, Tuesday, May 27, 2014, 22:23 (3775 days ago) @ Drago
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Sincerely,
Hobie
Heat the part before you apply the cold blue.
by Rob Leahy , Prescott, Arizona, Tuesday, May 27, 2014, 23:29 (3775 days ago) @ Drago
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Of the Troops & For the Troops
Heat gun?
Or propane torch?
i use a torch but a Heat gun should do it.
by Rob Leahy , Prescott, Arizona, Wednesday, May 28, 2014, 11:13 (3774 days ago) @ Drago
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Of the Troops & For the Troops
Cold Blue
by Slow Hand , Indiana, Wednesday, May 28, 2014, 06:40 (3775 days ago) @ Drago
I've had good luck with Birchwood Casey's paste. I haven't got a shiny finish, but the paste seems to stick and soak in better. I agree with the heating first. A heat gun works well or even a hair dryer.
Of BC's products, the paste does work best.
by Hobie , Shenandoah Valley of Virginia, Wednesday, May 28, 2014, 11:05 (3774 days ago) @ Slow Hand
Multiple applications is almost a necessity as is a thorough degreasing (which I suspect you already knew). 
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Sincerely,
Hobie