This is an electronics enclosure that I needed for a small tank track robot platform.
You can pay full price for one like I did here: https://www.amazon.com/mountain-ark-Tracked-Platform-Aluminum/dp/B0746FTL9Z
Or you can save some money but wait:
https://www.aliexpress.com/item/DOIT-Mini-T100-metal-robot-tank-car-chassis-crawler-caterpiller-tracked-vehich-with-plastic-track-diy/32815488700.html
For mounting screws, I used #6-32x1.5" but an M4x40 should also work. In fact any length over 3/4" / 20mm should be fine.
NOTE: I had to use a spacer nut to get the type of clearance I wanted, otherwise the tracks may slightly touch the bottom.
electronics-enclosure-plain.fcstd | 126.6KB | |
t100-enclosure.stl | 59.8KB |