I got my AR3 up and running and have made a few upgrades, but I'd like to get them dialed in before sharing. So yes, still very interested...

I purchased the solidworks file a few months ago. It contained all of the custom aluminum, 3d printed parts and electrical hardware for the arm. It did not include screws/fasteners, cables, or control box. I found it very helpful. I modified many of the 3d printed coverplates to suit my needs.

here is a link on how to disable 5V power from pc on a teensy https://www.pjrc.com/teensy/external_power.html

I just started building my AR3 last week and have a ton of experience in Solidworks. I hope to have it running by the end of next week. I'm game to contribute where I can...

I completed the mechanical build of the arm this weekend, and am starting the enclosure. The base pieces that go under J1 and receive the motor plugs and the cover pieces for J5 seem to be the only candidates for threaded inserts. No inserts used yet, but the base pieces should be an easy retrofit. The J5 shroud is super tight and lacks sufficient wall thickness for an insert. This part is easy to redesign/replace later on... I won't get to the cabinet until later in the week and I will see how it goes..