no he prolly did mean CFM - the rental towable commpressors are designed for running jack hammers and commonly can push up to 200CFM!! but yer right, using 175 CFM w/ a sandblaster would put holes thru 1/4" plate grin I think run-of-the-mill home blasting guns are rated about 8-15 CFM, and the size of the tank is more relevent as long as the HP and PSI can keep it full

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics