Ender 3 Upgraded Control Case

Didn't look the factory control box so designed a new one. Adds a bunch more slots for airflow and moves the fan (or fans, should you want) from the lid to the side, blowing right over the stepper drivers. The lid just slides in and out, meaning you no longer have to wrestle with those cap heads under the bed. The front panel is slightly thicker so it's a bit more awkward to remove the SD card, but definitely still manageable.

This requires that your printer has at least 3mm rubber feet, and