I know there are already a couple of things on the site about soda blasting, but they all seem to be in the middle of build threads, so I thought I'd start my own. Over in this thread, I'm playing around with a bike, and I'll need to do a fair bit of blasting before I'm through. I want something I can use at home, and I'm leaning towards soda blasting because it's not as messy and it seems pretty cheap. There seem to be several variations on the same theme; that is, use an air gun with either a tube that sucks up the soda, or a gravity fed hopper on a specially made unit. I'm after info from anyone who's actually made or used a pre-made soda blasting unit - what will it get through, what are the issues, what kind of compressor will I need, etc.