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Denatured Alcohol
Although it's common for stained glass books
to recommend using denatured alcohol for cleaning glass, it's not
the best choice for cleaning glass that will be fired in a kiln.
That's because the denaturing process, in which alcohol is made
undrinkable by adding other ingredients, can sometimes change the
product so that streaks show up after firing in the kiln.
While this doesn't happen all the time, and
while some brands of denatured alcohol may be more likely to streak
the glass than others, it does happen often enough to make it a good
idea to clean your glass with something other than denatured
alcohol.
Most folks recommend isopropyl alcohol,
which is ordinary rubbing alcohol. It's inexpensive and also
totally avoids the possibility of causing streaks in the glass after
firing in a kiln. You might also try plain water (even less
expensive), which works very well to clean most glasses.
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Copyright 2005 Brad Walker.
All rights reserved.
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