17/10: I laser cut the parts I modelled for the version 1 of the arm. The modeling was made on Fusion 360 and the material for the cutting is  3mm plywood.

I then started to work on the mechanism of the arm. The first objective is to be hand directed so I had to think about the different connections needed. I started to work on the 'shoulder' connection. The solution I came with was to use gears, bearings and a shaft to connect the two parts together so I search the different types I could use for my project.