Another issue that needs solving is putting things together - properly. For now there are no lids in Boxes.py that are suited for a gear box. The attitude has been avoiding screws. Most things are just pressed/hammered together with finger joints which are pretty hard to get apart again. For a gear box we want something that we can screw on. Especially as this lid is probably going to hold the shafts in place.

One way would be using some two layer lid - basically like the RoundedBox. The lower layer firmly attached with finger joints and the upper layer glued to the cut out in the first layer. This creates a lip giving extra stability. May be the first layer could also be attached with finger joint holes creating a ridge around the top in which the second layer fits in.

This two layer approach also allows for stud hole for the intermediate shafts.