Anybody use Laurel Mountain Barrel Brown and Degreaser? Easy to use, no damp box with normal humidity and it always gave me a nice fine grained brown. One of the old luminaries, Bivens I think, speculated in an article that the stuff would work out very well for rust bluing, but that's all I heard. The stuff sure is easy to use for browning.
I would not use a buffing wheel either. The buffer has to be of good quality (expensive) Any wobble or imbalance will show up in the work and it takes quite a bit of power to spin a wheel with all that friction.The things are hard to control without lots of practice. And you're not looking for a mirror finish anyway. All sources say what Gnoahh said, go no finer than 400 grit. Which makes sense, the first thing rusting would do is destroy all that nice, mirror finish.
