Small Windup Tourbillon

Small and compact windup tourbillon design based on the Blancpain Tourbillon Carrousel, less than a 100mm at its widest. I had to go through several design iterations and prototypes before i landed on a result i was happy with posting online.
It lasts about 3 minutes on 1 wind

[Video](https://www.youtube.com/watch?v=zj2x6IsGiTs)

Note: Mainspring must not be printed in PLA. PETG or ABS is preferred.
Parts may need to be reoriented before printing.

Tools and parts required:

A printer well calibrated for accuracy
0.25MM nozzle
Needle or diamond files
Cutting broaches, 1.5 to 3mm in size ( [Example](https://www.amazon.com/Cutting-broach-set-1-2-3-0mm/dp/B003LS2H7C/ref=sr_1_112?qid=1584415456&sr=8-112&srs=8181165011) )
1x 688(ZZ) bearing (8x16x5)
2x MR63ZZ bearing (6x3x2.5)
5x M3 x 4MM screws (correct length is critical), preferably din 98 cheese head screws
4x M2 screws, max 8MM length
2MM metal rod
3MM metal rod (avoid piano wire if you only have light hand tools, t