dedub, I don't think you will do any sandblasting with your compressor. Sandblasters eat the air because you have to have a nozzle large enough to handle the media and you need the pressure along with the volume of air to move the media at a speed that will remove the rust and grime from the part you want blasted. One place you may want to look to do your blasting of big, heavy parts is a tomb stone business. They use big equipment to blast the lettering into the stones. Many of them take items on the side when they are not overly busy. You don't want to take sheet metal to them unless they know to turn down the flow and pressure.