5/12: I had a very busy schedule so I lost focus. Plus, I started to procrastinate the assembly of my arm. Nevertheless, in a first time, I modeled the new bearing supports with adapted dimensions. I needed to reinforce the screw holes because they were too breakable. I also added a fillet on the top of the support to steer the bearing more easily. Because of the friction of the inside wheel of the ball bearing on the support, the bearing couldn't spin as well as it spun outside of the support. Therefore, when I modeled the piece, I didn't extrude the matter as much for the part in contact with the small wheel as I did for the part in contact with the larger wheel.

In a second time, I modeled the structure of the arm with holes to screw the bearing supports, the shaft supports and for the shaft.