Originally Posted by
HankMcSpank
....(for those still using base 8, 16 & 32 systems, that's a reduction in thickness of about 0.03937"!)...
You must have a good machine if it can get down to 0.00007" precision.
You can face it okay but if it is cast acrylic you may run into stress cracking problems when you do the gluing.
Use a small flycutter with a wonderfully sharp HSS tool with no top rake. Cut the strips a few millimeters too wide, clamp them along the edges and run the cutter down between the clamps doing your full width, full depth. Something like 2000 rpm should be fine so long as the flycutter is not badly out of balance with a feed of around 0.002" per rev (you can do the conversion ) Soapy water sprayed on as a coolant might help with the finish.
The finish will be opaque and the flatness depends entirely on how good your machine is aligned.
An open mind is a virtue...so long as all the common sense has not leaked out.