I found Wired1's solution https://www.thingiverse.com/thing:29572 most suitable for my use. Then the heatsink I ordered arrived and I wanted to add that in for an additional cooling effect.
(FYI, the addition of a heatsink to the motor only reduced the motor temperature by around 5℃ to 8℃ for me, whereas adding a fan lowered the motor temperature by around 20℃.)
Minor changes:
- Increased the depth to allow <12mm heatsink to be pasted on.
- Added some holes in the hope of increasing airflow. Inconclusive so far.
- Changed the mounting hole to take M3x3 (M3 OD 4.5mm, 3mm depth) threaded inserts.
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