Our shelf don't have sufficient top room for the filament spool holder to be put on top of the printer gantry, we also find that 1 kg weight of filament put on top of the printer added more vibration to the printer, therefore we created this adaptor so that the filament can be put beside the Ender-3.

M5 10mm bolt x 2
M5 T nut x 2
M5 8mm bolt x 2
M5 hex nut x 2

Print this model as it is (side way) no support needed.

2018-11-23
- Fixed the no hole issue due to extra polygon in the model.