[Alternative Mount] - not in the merge:

Mounting bracket designed to use generic 11 mm chair/furniture wheels with the case (see pictures for reference).

If you prefer to print your own wheels there are a few 11mm Wheel models out there. for example: https://www.thingiverse.com/thing:418322

The hole diameter is 10.8 mm, allowing the wheel-stem to be press-fit securely.²
The wheel can be removed with force, its tight enough to lift the case without loosing a Wheel.

A few millimeters of the original Cooler Master mount are retained as a guide to prevent it from shifting.

If your slicer (e.g. Cura) automatically scales the model (for example to 10000%), go to Preferences → General and disable “Scale large models” and “Scale extremely small models.”

I used inexpensive PETG (~€6/kg), which works well for this.

My slicer settings:

- plate adhesion: Raft (Otherwise, cheaper filament may still warp)
- Supports: Not required, but tree support is recommended
- Infill: 70% (60%+ works fine)
- Ironing = on

Some Credits to this tutorial https://www.youtube.com/watch?v=KOgX-625lWY 

Note²: Some chairs (e.g. IKEA or other brands) may use 10.2 mm or 10.5 mm pins, which can result in a loose fit.
This model was tested with wheels from a Secretlab chair as well as generic 11 mm wheels from eBay.