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Do It Yourself Sand Blaster
Bob Zimmerman, Oak Bluff, Manitoba, built a pressurized sand blaster for less than $50 using an air compressor, a 12-gal. pressure-tested water tank to hold sand, used hydraulic hose lines, and a standard sand blaster nozzle.
Zimmerman turned the tank upside down and used a cutting torch to cut a 3-in. dia. fill
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Do it yourself sand blaster FARM SHOP Miscellaneous 14-4-8 Bob Zimmerman, Oak Bluff, Manitoba, built a pressurized sand blaster for less than $50 using an air compressor, a 12-gal. pressure-tested water tank to hold sand, used hydraulic hose lines, and a standard sand blaster nozzle.
Zimmerman turned the tank upside down and used a cutting torch to cut a 3-in. dia. fill hole in the bottom of the tank, which is concave so it's easy to fill, then welded on a filler hole bunge and cap from an old metal gas can. There's an air intake valve on the side of the tank and an outlet valve at the bottom of the tank. The inlet valve controls the supply of air going into the tank and to a 10-ft. length of hose leading to the nozzle. The bottom valve regulates flow of sand, which is drawn into the nozzle hose. Zimmerman simply turns on the air compessor and adjusts valves for the right mixture of sand and air.
"It works just as well as a commercial sand blaster and cost a lot less," says Zimmerman, who welded transport wheels onto the bottom of the tank. "Most commercial sand blasters cost $300 to $400 and require more air than the aver-age farm air compressor can deliver. My sand blaster requires only 60 lbs. of pressure which my air compressor can easily supply. I use the sand blaster to remove corrosion and rust from metal, leaving a fresh clean base for repainting. I use 60 to 80 grit silica sand. The valve at the bottom of the tank controls the sand flow separately from the air flow. Air enters the tank above the sand and the pressure keeps sand flowing down and into the hose. My only expense was for the three 1/2-in. dia. ball valves which cost $7 each, and for the sand blaster nozzle which cost $5.50."
Zimmerman notes that anyone who builds a pressurized sand blaster like his should use a pressure-tested tank and do a careful job of welding so the tank won't rupture, causing possible injury.
Contact: FARM SHOWFollowup, Bob Zimmerman, Box 42, Oak Bluff, Manitoba, Canada ROG 1NO (ph 204 736-2955).
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