I have sand blasted just about every part of my truck either in the driveway for the big parts, or at my work in a cabinet using glass beads.
On the larger parts like the frame, I started by using silica sand. Since, I have used Industrial sand I bought from Home depot.
I got to say that I don't really see any difference. And I have blasted the cab, doors... you name it. with just good results.
The only thing that makes it difficult is the air supply gives out before you do.
You need two projects going at once so you can wait on your air compressor build back up.
My two cents.
Good luck!
