Model designed to avoid wasting finished filament spools and to be able to stack as many modules as you want one on top of the other.

It is valid for Geeetech and Giantarm spools.

There are two types of shafts available for download. One of them does not need screws, and is mounted by slightly forcing the filament spool (it is recommended to print it horizontally). The other is designed to thread an M3x10 screw on each side.

To make the holes in the filament spool use the template, which fits in the two oval holes, so that the holes are in the same position on both sides.