Just a quick question, Im gonna sand blast my frame and was wondering what media to use. I live in a pretty small town and all I can pick up locally is some 20-30 grit blasting sand. I was wondering if this would be fine for the frame or if it would be too rough on it. Its cheap stuff 8 bucks for a 100lb bag and its silica free. I ask because I blasted a small area today and it looked like it might have been a little harsh, but then again I have never sand blasted before and dont know what to look for. Any input would be great becasue I wanna get started on it tomorow.