Crushed glass is way different than glass beads. Crushed glass is much more agressive than beads, its like sand. I used it in a cabinet before.

I'm not sure of the advantage over silica or slag products though. I'm guessing it doesn't last as long.

I had body parts blasted with silica sand. The problem lies with people cranking pressure to get the job done faster. More pressure = more heat = more warp.

I had a 71 cuda blasted and it came out fine.