I bought a "40 lb." pressurized sandblaster, and I am rather disappointed. Blame it on inexperience. It pumps though 5 gallons of sand in about 3 minutes, and it takes at least 5 minutes to stop and fill it back up again. As you can see, this quickly gets frustating.

I was thinking about maybe buying a "110 lb" one. That will get me up to about 8 minutes of blasting time, but I have other ideas.

I bought a siphoning unit for about $20, but I have not fully tested it yet. It doesn't appear to be very effective, though.

Has anyone ever made their own pressurized sandblaster? I was thinking about using a 25 gallon drum, but I don't know about the allowable pressures. I will have to do some studying on that. I think about 100 psi is required. I want to be safe.

Any ideas?