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A sandblaster uses air according to the nozzle size. You can run a blaster off a compressor that small but it would be very time consuming and inefficient. Installing a larger reciever tank in line with the air compressor only helps for a short time compressor takes longer to fill the extra tank ( no free lunch ) Sandblasting requires large amounts of air the road units I designed required a 1600 cfm diesel compressor. A nozzle size of 1/4 " requires 90 cfm to work properly if the pressure drops below 75 psi or so your efficiency really goes down hill. A little long winded here but hope I helped.
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