Draconis, on May 1 2009, 12:44 AM, said:
I left some tolerances around the 1/4" thick parts just in case someone were to purchase sheets in metric thicknesses.That is correct, Analog. Lexan is a brand of Polycarbonate that is widely available. To address the real question, though, 3/8" is WAY too thick for anything but plunger rods. The design is around specifically dimensioned components that cannot be altered without altering everything else.
But the above posters are correct. The clearances between the two frame pieces and the catch plate are too close for all of those parts to be made from 3/8" thick sheets. You would have to make way too many changes to all of the relevant holes in the side plates and grip in order to make them fit.