I have some small pieces of 1/4" Lexan, 3.5" long. I need to cut parallel grooves in one surface, 1/16" x 1/16", spaced 1/4" apart. The best idea I've had so far is a rotary tool with a cutting wheel mounted on a board. Here's the hasty version of this rig:
It cuts well, but it leaves curls of cuttings melted to the sides of the grooves that are a PITA to remove without scratching the Lexan:
Any ideas how to minimize such curls, or how to remove them easily and cleanly?