I read this somewhere as well. When I did the lesson last spring, I used perlite which is a volcanic substance and from the research I did seems to be a safer option. It is used for the same purposes as vermiculite, and I was able to buy it at a local nursery for about the same price. Both materials have an MSDS sheet that you can read on the Schundler Company website.
Deborah
----- Original Message -----
From: Duffey, Patrick G.
To: ArtsEdNet Talk
Sent: Wednesday, September 01, 2004 6:58 PM
Subject: RE: plaster sculpture
I thought I heard that vermiculite has high quantities of asbestos fibers and should not be used?
-----Original Message-----
From: Aartteachr@aol.com [mailto:Aartteachr@aol.com]
Sent: Wednesday, September 01, 2004 8:19 AM
To: ArtsEdNet Talk
Subject: Re: plaster sculpture
In a message dated 8/29/2004 11:23:39 PM Eastern Standard Time, dianemdavis@mac.com writes:
mix it with vermicullite to make a great carving medium. can be carved
with plastic butter knives if needed and depending on the amount of
verm. added. a good challenge and example of subtractive sculpture
I have done this and also added coffee grinds from my morning coffee pot. It gives the plaster a stone look and also has little brown flecks that imitate stone imperfections. I then sprayed the sculptures with acrylic spray. Fooled many a parent at the exhibit as they thought the kids carved and polished stone. ---
duffeyp@peninsula.wednet.edu
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