Today I was a happy man since I finally received the very long m3x50 screws and the 6 mm balls for the 3D printed ball bearings.

To hold the 2 Art2Bodies together it requires 8 very long M3X50 screws and nuts.

The upper part will have one metal axis, the lower part that drives the cogs will actually be 2 small axis endings that will get pressured in place by the midsection. I did had doubt this part would function well but now that I have the midsection assembled I am convinced that it will work.

---

I also received the 6mm balls for the 3D printed ball bearing for Art3Body. So I could assemble it.
(Note: This part has been photographed upside down to show the cogs)

Detail of Art4TransmissionColumn assembled with the 6mm balls that gets inserted through the hole (left side on the image). Once this part is inserted into Art3Body, the hole gets covered. However I put a piece of paper to block the entrance because I don't want the balls to drop when I disassemble.