hello, if you are still needing info on rust blue process pm or email me and I can send you lots of stuff. I'm a gunsmith, have performed rust blue restorations or on new build firearms many times. I have my own recipes, I don't use the off the shelf stuff you pay an arm and a leg for. that said, there's nothing wrong with the brownells products or those they sell, I just won't pay $36 for a 6oz bottle when with the chemistry background we all posses can make our own formulas. it will all come down to experience however. the more you do it, the better you'll become at it. also, the more you play with various chemicals (salts) the more familiar you'll become with results and expectation from a particular formula. i'll add as a precaution that without a chemistry background, or at the very least, ability to research extensively the chemicals you are using, how to mix, what to mix, what NOT to mix, then I would stick with off the shelf stuff. anyways, if you want info ping me and i'll be happy to scan and send. too much to post in a tread. it'll make your head pop!
