Back to assembling the power box.

Nifty sealing on the wires.

Back to working on the drive mechanism. The base plate was cut early in the process, well before we knew how everything would assemble (there's a lot of ad hoc engineering here), and the enclosure I'm putting over it needs to fill this gap. Foam prototypes are awesome because they're cheap, easy, and fast to machine.

My first experience with polypropylene. It makes a huge mess with fused chips and swarf, but the stuff is really strong.

Really strong, as in when it gummed up, it actually stalled the drive motor and blew the fuse in my controller. But this is a good opportunity to show reusability in engineering design. The treadmill mill controller, muffin fan, transformer, and a lot of various unseen smaller parts from the mill are the very same ones I chose for AquaDog.

Building the water-resistant enclosure. The CAD drawing is for reference only, not for automated machining.