Nitro Mesh Controller Volume Knob

Replacement volume knob for Alesis Nitro Mesh DM7X controller.

Picked up kit on C/L for teenage son and rehabbed it. Volume knob was missing
so I printed one up. Figured I'd share it in case anyone else needed one.

Generated by openscad knurled-knob Thing.

Drilled a tiny hole that aligns with hi/low marks on controller and filled with white enamel paint and threw on some clear coat to protect.