well i got question sure everyone get tried people asking this... i have a blasting cabinet  that i been doing a lot of glass etching mugs and stuff and i been useing the play sand from lowes  well i would like try something new i like the play sand because it give it a really deep etch so i been reading the forum what sand would give me that same effect but not be as ruff on the health... i have a aireaser  that i used  AOA 220 in and it would not give that deep etch look

I use the Black Diamond in 40/80 grit from TSC.  It's less than 1% free silica.  It will etch a hole through the glass if you leave it in one spot long enough, so it will give you the depth and texture you get from the play sand, and it won't kill you.  Always wear eye protection and a mask when blasting, regardless of what you're using. It's not just the media to worry about inhaling, its what you're removing from the surface you're blasting.

My rule, if it's not air, it not going in my lungs (unless of course I swallow something the wrong way, in which case coke, food, spit, etc. may enter, albeit unintended. )