roberttp

I've used the impulse framer a bit, and while it beats nailing by hand in a lot of circumstances, I would take an air nailer any day over the gas. I found the pasload impulse finicky in the cold (although air nailers are too), loud, and slower than an air nailer especially when nailing off sheathing. I found it heavy as well, but maybe it's just a balance issue.
Tucker and Kit seemed to hit the nail on the head. I have a little thomas compressor that is so light and compact that I use that for pick up work, or really anytime I'm working alone and don't have my bigger compressor rolled out. It works great for finish work, and I can run my Max superframer for stud work no problem. I'd highly recommend this sort of set up in addition to having a bigger copressor.
If you interested in picking up a gas nailer, you can usually find them popping up used on craigslist this time of year in the northeast due to the cold weather operation issues. Just my own opinion.

In my opinion, crown (as well as other profiled moldings)should be coped at inside corners, not mitered. The things is this:wood moves with changes in humidity and moisture content, and glue and caulk will not work in all situations to hide or stop this movement. Plus an inside miter wants to move and open as you fasten it There are always exceptions, and I'm not trying to convince people that have a working method to switch to coping ( unless they're on my jobs). That said, there is a good reason that the traditional method is a cope: it may take skill, practice, and a little bit of time to cope properly, but properly done nothing works better.