Who is CAD?

This week was my first ever work with Computer Aided Design. I later revisited this assignment to improve and detalize my final project design, and this page represents the finalized version.
Importantly, I started off my CAD path with Fusion 360 - no real reason why this one, except that all the tutorials were in it, and I felt like I can get more help in it from TAs. I overall liked Fusion and never really wanted to switch later in the semester.
My first impression of Fusion 360 was as if it is some black magic. Too many buttons, everything is unintuitive. Converting from a sketch to a surface to a mesh was very non-obvious, and of course I didn't know any shortcuts.

Result & Challenges

This task took me a while, and I haven't been saving intermediate steps. So, a short summary of the work:
1. Bionics are hard. I imagine something like blender is nicer for bionics, but fusion is only easy with regular shapes and their combinations.
2. There isn't a good reason to make the system very detailed and realistic, especially for MVP. There are a lot of existing models online, if you want a realistic one, but focus on my project is the mechanism, not aesthetics.
3. I got stuck in 100+ bodies, and it was very hard to navigate. Renaming and structuring bodies is very important.
4. Joints are hard to align, model, estimate the kerf. This CAD is a reasonable estimate, however, exact details might be tweaked later on.
5. Some elements are hard to model, namely threads, and I just skipped them for now. They act as flexor/extendor ligaments for each finger respectively, and get connected to servo motors in the forearm. I hope that it is intuitively clear from the model, didn't really want to add more confusing cylinders.
6. I am still unsure about how specifically the forearm will be made - I might skip it, 3D print it, make a composite, but that is rather a minor aesthetic detail.

Future Work

Some of the improved design features I might add later would be allowing fingers to move sideways, and include porous structure for the forearm. And maybe actually CADing threads.
Please find the CAD file here.