The Stovebolt Site Forums The Shop Area Paint and Body Shop WHAT KIND OF SAND SHOULD I USE TO SAND BLAST A 55 CHEVY 2ND SER.

I use the black slag too. About $5 for 50 # at a contractors building supply. No silica. Works very well.
You will also need a water trap in your air supply line or the blasting media will get wet and clog your gun. I coil my air line off the compressor into a 5 gallon bucket filled with water to cool the air before my water trap and that gets rid of the moisture for me.