I've been asked to cut a stencil for a friend that wants to sandblast a glass window. He has a small blater, but was not sure what psi he needs or what kind of sand would be the best to use. Your help would be appreciated! Bren
------------------ Brenda Beaupit Classic Graphics Kemptville, Ont CANADA
Posts: 346 | From: Stittsville, ON | Registered: Dec 1998
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Hi Brenda, I know what you're talking about. I have a small bladder too. You transposed the s and the i in that other word, it has another s also. Not sure what this has to do with sandblasting, but I hope somebody can answer your question.
Sorry 'bout that, I have a strange sense of humor.
------------------ Dennis Goddard Excalibur Signs & Graphics Tampa Fl
Posts: 1050 | From: Tampa Fl USA | Registered: Apr 2000
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Brenda- Depends on how deep of a blast they want. They can use anything from, corn starch too silica sand (play sand). Best to use aluminum oxide, very fast coverage, low pressure. (30 psi) and it is difficult to even feel the blast on the glass. You can get it at any stain glass supply. If you want to use play sand, use it at 40/ 50 psi. The thickest vinyl I use is 3mil,for silica sand. Remember the courser the agraget the harder it will cut into the glass. So, depending on the look they want, depends on what they use to cut into the glass.
------------------ David Overholt RunningDog Artworks 210 Cedar St Pemberville, Ohio aka, doc
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Brenda- Dont know how big of a project this is, but they could also "etch" the glass with hydrofloric acid, available at stained glass supplyers, (about $11.00/ qt). Lay the stencel, and paint the acid on, leave it sit for 10min. wash it off and be done.
------------------ David Overholt RunningDog Artworks 210 Cedar St Pemberville, Ohio aka, doc
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Brenda, Safety should be a key issue when dealing with the blasting and the acid. From the info in your post, it sounds like the other individual will be doing the work. Do yourself and the other person a big favor and suggest they research the safety aspects of both of these processes. While the effects that MAY come about from blasting are usually long term and accumulative, hydrofloric acid can mess up your day real fast! and real painfully! Just my 2 cents worth. Robin
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