It's a pressurized pot system. I have a hood that came with it, but its pretty beat up. Last stuff I sanded I just used a face shield, ear muffs, and a respirator.
I sandblasted some front end parts (fender braces, radiator shroud, etc) on a nice low RH day. But my epoxy was old and had set up on me. Otherwise I would have hammered down on the frame, which is what I need to get finished up first. A couple of good days have come and gone but calls for rain the next day and didn't want to get rain/moisture on a freshly epoxied frame before it has had its full window to cure. Having to do it all outside on the frame.