Black Jaque,
Norm or Chowmi is fine. Chowmi is my old USAF name (pronounced: chow-my. don't ask...)
Frogwalking's advice is good. There are also several topics here on the forum relating to browning, and specifically with LMF.
It is very dry where I live, and I did not use a sweat-box. In fact, I had a hard time getting a good, deep brown, and really did not have to avoid pitting. I draw filed and sanded to about 220 grit, maybe 325 or so. I over polished the lock, and had a really hard time getting some of it to brown. The browning solution does need a little bit of a rough surface to take hold.
The browning process took me about a week, with probably 4-5 applications, and I even let a few lock parts sit for 3 days while I was out of town. I believe this is due to the low humidity and possibly the overly smooth surface on my lock parts. The barrel probably took about 5 days. I wouldn't take my experience as the normal. Most guys I see talking about LMF can do it in 2 days.
Anyway, my point was that I did card between applications, but due to the low humidity, was not in danger of pitting.
I boiled the lock parts in distilled water and for the most part had very good results. There is a section on the cock that is not as nice as I'd like, but I'm sure that is because the browning didn't go as well as I wanted for that piece.
I also learned that the pieces don't necessarily need to be in a full boil. I got a 2 inch diameter PVC pipe and capped one end to rust blue the barrel. I put the barrel in the pipe, and then filled it with just-boiled (i.e., very hot) distilled water and left it for 20 minutes. It came out real nice. I'm having issues with Flickr right now, but will try to put a picture up when I get it sorted out.
Cheers,
Norm