I just bought the 40 lb on sale. I've always been curious jus to see how they work. I'm a dork. The abrasive just pours out like turning on the garden hose. I'm seriously under powered in the air department. Oh well, I'll need a new air compressor some day...
BTW, this thing is a low-tech piece of ##%&$. I assembled it with teflon tape but virtually all the fittings leaked. I'll redo with a ton of teflon or the fat kind used for gas. The ball valve at the nozzle is kinda cheezy. A dead man's would definately be a good upgrade so that you can control the dern thing. I once saw a picture where this stuff is manufactured. The guy was wearing sandals and he was standing on a dirt floor.
