If we’re looking to get a little more grip between our surfaces, I’ve had success with a thin sheet of Santoprene rubber (also laser cut) set between the Delrin and its mating surface.

He uses a laser cutter to cut Mylar sheets into stencils. [Juan] appears to be using EagleCAD and Express PCB. Both tools are available for free to hobbyists. The first step in the process is to ...