Fusion360 model of the mechanical bits, so you can see all of my CAD crimes. Some minor hardware (like bolts and nuts) is missing, and the assembly isn't joined, just aligned.
Open-source license for the mechanical parts of the project! CC-BY-SA 4.0: <a target="_blank" rel="noopener noreferrer" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">https://creativecommons.org/licenses/by-sa/4.0/deed.en</a>