Cold Bluing In The Home Workshop

[VinnieL]

I use Brownell's Gunsmithing Supply's Cold blue. It seems to work a little better. I have touched-up several firearms with it.

Birchwood Casey also makes an Aluminum Blackening solution which works well on alloy pistol frames.

I use Acetone or Laquer Thinner to remove oil and grease before bluing. Also flashing a propane torch over the item to be coated just to warm it slightly also opens the pores of the steel and allows the bluing to penetrate better. Just let the solvent evaporate before heating it with the torch or course!!