This 3D printable filament spool holder fits standard 1kg rolls of filament.

The spool holder base is 3D printable without the need for supports.

This spool holder works well for a Prusa i3 style printer, but can be used with any 3D printer that uses 2020 aluminum extrusions.

The spool holder mounts to a 2020 aluminum extrusion using two M3 x 10 socket head cap screws and two M3 T-nuts.

Two 608 bearings are mounted on either end of the rotation cylinder to reduce friction when filament is fed into the extruder.

Required parts:
Spool Holder Base - qty: 1
Spool Holder Rotation Cylinder - qty: 1
608 bearing - qty: 2
M3x10 socket head cap screw - qty: 2
M3 T-nut - qty:2

CAD files for the spool holder can be found here:
https://grabcad.com/library/filament-spool-holder-parallel-design-1

An alternate design that holds the filament spool 90 degrees can be found here:
https://www.thingiverse.com/thing:5953010

Please do add acknowledgement if you use the CAD files. Thanks!

Prusa

I3 MK3S

No

Yes

0.2mm

25%

Printing at a higher infill with more perimeters is recommended for a higher strength part.