"Charles Krug" wrote in message
...
On Sun, 10 Jul 2005 09:30:51 -0400, Don Phillipson
wrote:
What sort of circular saw blade should be used
to cut plexiglas (Lexan) of 1/8 inch thickness?
This is to make fixed windows, screwed flat to
the structure of a shed.


Howsa 'bout a plexiglass blade?

All SORTS of tricks exist for this, and ymmv.

If you have a lot of plexi or Lexan (they aren't quite the same
material) to cut, consider a dedicated blade designed for the purpose.

Failing that, try the material manufacturers' websites for any relevant
application notes. In general manufacturers want you to feel warm and
fuzzy about using their stuff, so they try to make sound
recommendations.

Some woodworkers swear by reversing an 80-tooth sawblade (so it turns
the wrong way).

I've done short runs, say five or six cuts, using an matt knife and a
straight edge. After several scores, it snaps right off cleanly.


Yeah, a knife or box cutter can work too. I've done it.