Marble Exercising Machine - Part 4 - Gear Train

This part of the Marble Exercising Machine is the gear train.

The components needed are:
One of each of the above

Note that the 61-tooth belt needs to be printed using a flexible material such as TPU-95A.

And 'common components' from part 1:
Spur gear 8 hex - 2 off
Spur gear 16 hex - 3 off
Bevel gear 12 type 1 - 1 off
Belt wheel 12 - 2 off
M6x10 cap screw - 4 off
M8x7 large head thumbscrew - 2 off
Spur gear thrust adaptor - 1 off.

Also required are 3mm diameter stainless steel rods of lengths 193mm, 46mm and 30mm.

Note that the half rpm shaft is assembled with the open Archimedean screw.

Assembly video: https://youtu.be/IPfFzaZBejQ