If there's somebody like me having PC4 M5 couplings laying around, here's a slot for Martin_J.'s MMU Slot buffer where you can use them.
use the same printing instructions than for the other pieces of the slot buffer.
Only the diameter for coupling was changed, the rest of the part is the same than the original (downloaded the slot on sept. 2020).
Resolution:
0,2 and 0,3
Infill:
15%
Filament_brand:
Any
Filament_color:
Any
Filament_material:
PETG
The author remixed this model.