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n85ae -> RE: Working with acrylic (Oct. 4 2007 14:36:16)
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Actually I know a lot about this as airplane use acrylic. And I have drilled a lot
of them.
For drilling, there are specialty drillbits available, however you can modify a
standard drill bit. The key is, that you do not want the drillbit to be able
to dig in while chutting, as this stresses the acrylic, and causes cracking.
Take a regular drill bit, and grind it so the tip is longer. Let's say you have
a 1/8" bit, and the tip is about 1/16" (guessing) regrind it so the tip is about
3/16"
You can also buy a drillbit, called a stepdrill, or unibit. Which are available at
most hardware stores, home improvement centers, etc. They cut well and
won't cause cracking.
Avoid cold, drill it where it is warm.
Regards,
Jeff
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