Can be used with this models:https://www.thingiverse.com/thing:3337819https://www.thingiverse.com/thing:3287301https://www.thingiverse.com/thing:3071456
Maybe can be used with E-bot models
f623 bearings can be replaced with pulley.
BOM:
middle part
3pcs M5x30 DIN912
3pcs M5 washer

3pcs T-nut

8pcs M3x25 DIN912

8pcs M3 hex nut

16pcs F623 bearing
top part
3pcs M5x35 DIN912
3pcs M5 washer

3pcs T-nut

4pcs M3x25 DIN912
1pcs M3x16 DIN912
9pcs M3 washer
4pcs M3 hex nut

1pcs M3 thin square nut

8pcs F623 bearing
bottom part
6pcs M5x12 DIN912
4pcs M5x16 DIN912
10pcs M5 washer

10pcs T-nut

4pcs M3x8 DIN912
2pcs M3x16 DIN912
3pcs M3x25 DIN912
12pcs M3 washer
1pcs GT2 Timing Pulley 16 Tooth Bore 5mm
2pcs M3 thin square nut

3pcs M3 hex nut

6pcs F623 bearing
1pcs 625 bearing
5m GT2 6mm belt