07-20-2016, 12:02 PM
Heating the part slightly - uncomfortable to hold in a bare hand, but not hot enough to burn you - will help the bluing process along. Make sure the part is squeaky clean before bluing. Scrub the bluing solution onto the part using gun cleaning patches or very fine steel wool. Let sit for about a minute, and do it again. Repeat one more time, then use fine oil (watchmaker's oil is perfect) to rub the part and stop the reaction. That's the method I use to blue parts for my model engines, and it holds up quite well.
Full of ideas, but slow to produce parts