On 31/08/2017 00:55, Dave M wrote:

snip

I'm leaning toward building a hot wire cutter into a frame that will keep
the wire taut enough to make a straight cut through the plastic. Maybe
mount it alongside the fence on my tablesaw. That should keep everything
nice & straight.

A hot wire cutter will create a lip on the cut surface.

I guess it could then be sanded off?

I think the sawing approach is easier, but mind your fingers.

The last time I cut a more substantial piece of acrylic I used a mitre
type of saw.

--
Mike Perkins
Video Solutions Ltd
www.videosolutions.ltd.uk