What kind of blasting are you doing? Big stuff or little stuff? Most glass can be blasted, I've heard you should stay away from/be careful with tempered as it can explode if blasted too deep. I have been blasting small items (glasses, tiles, etc...) in my little sandblasting cabinet.
I use:
150 grit silicon carbide 70 to 90 psi (with a siphon unit, but pressure pot units work better) For a stencil I have used photomask material, and intermediate vinyls with good results. "paint-mask" vinyl works good too, and comes off easily.
Hope that helps.
-shane
-------------------- Halo Graphics Clearlake Oaks, CA http://www.halographics.com ntshane1@halographics.com Posts: 308 | From: Clearlake Oaks, CA | Registered: May 2001
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I use aluminum oxide for all my blasting, I use a very fine, almost powdery grit for everything.
Once I'm done with the blasting, I brush off as much of the dust as I can then flood the piece (whether it's glass, acrylic, or ceramic) with water to rinse the rest away.
You can blast any glass. Tempered glass can shatter if you blast it deep enough, but if it shatters, you are blasting way deeper than you need to. A light surface etch is all you need for a design to really stand out.
The image below was blasted using a Paasche Air Eraser. I suggest you get one if you dont already have one, they kick butt. I used alum. oxide abrassive, 45 PSI, and spent maybe 5 minutes or less blasting it... it's a very light etch but it stands out nicely.
-------------------- "If I share all my wisdom I won't have any left for myself."
Mike Pipes stickerpimp.com Lake Havasu, AZ mike@stickerpimp.com Posts: 8746 | From: Lake Havasu, AZ USA | Registered: Jun 2000
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