(Customizable) Arcade Spinner Knob / Rotary Encoder Knob

This is a knob for a rotary encoder - I'm going to use it as an Arcade spinner for Arkanoid (and Tempest!).

I added some weight by a few M5 nuts (and M3 screws) to improve spinning.

The holes in the top part need to be tapped so you can connect both halves via M3 screws (or just don't use the M3 screws and glue both halves together).

If anyone is interested, I can add the Arduino code later (it's basically just some quick'n'dirty lines of rotary-encoder-example-code stuffed into the