Print setting as shown in the picture to get the honeycomb-pattern in there.
You will need also:
4x M3 Nuts
4x M3x8mm Screw
Use the
MMU3-Skadis-plateholder.3mf
from https://www.printables.com/de/model/757781-hanging-mmu3-buffer-on-skadis/files to mount my holders to your buffer.
The author remixed this model.
Hang the Buffer vertically on the skadis wall