|
Try heating the metal to just below boiling, apply with 000 steel wool. You don't have to degrease when using the steel wool, some oil seems to spread the blue around more evenly. When done, just wipe with a damp cloth. This is the only cold blue I've found that does not cause after rusting, due to the phosphoric acid in it. It will not blue all steels, however, and case hardened parts may be a problem.
|