It uses m3 heatset inserts and bolts for the lid, its designed for a smaller 1500mah pack. I used some velcro to attach it to the snowcat but you could also use glue.
You will have to print with supports for the inside but set it to 85% overhang so you dont get too many anoying supports. The tolerance for the lid it 0.1mm so if ur printer cant handle that use horizontal expansion.
The author remixed this model.
completely new design