... .Custom machined plastic switch knob 2.Material: acrylic PMMA 3.Small trial orders accept 4.Complex ... shapes can be available 1. Precision acrylic turning switch knob ;2. Custom knobs can be ... , Stainless Steel 316, 303, 304...Plastics:Nylon, POM, Acrylic, Delrin, ABS...You Supplied:Engineering drawings: DXF, IGS, STEP ... mass production. CNC turned plastic switch knob with acrylic PMMA