I decided to go for the full-break method of investigating the electronics, and while it worked out well to start, it's looking iffy going forward.
Tearing Down a Quadcopter: Part 4 - Reading Upside Down Breaking

I decided to go for the full-break method of investigating the electronics, and while it worked out well to start, it's looking iffy going forward.
How small can we get with a functional gear part on a FDM printer? What about packing in extra batteries?
Two more iterations on the battery cover / side skirts