On Wed, 30 Aug 2017 17:57:06 -0500, "Dave M"
wrote:

Any suggestions as to a good, safe approach to cutting the plastic?

Repeatedly score it with a suitable blade and snap it along a hard
strait edge. When I was using a lot of perspex I had a strait edge
made with a steel rule glued to a wooden board. Occasionally I needed
to use two boards clamped in a vice.

Steve

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