Filament spool holder (yawn) - with bearing

thingiverse

As per the instructions from http://www.thingiverse.com/thing:12312, print the top_corner with bearings instead of the standard top_corner.stl. For optimal dowel length, use 2 x 25 cm and 2 x 33 cm for the base, 4 x 33 cm for the middle, 4 x 25 cm for the forks, and a 16 cm middle axis with drilled 2.5 mm holes at each end, which should accommodate 624 bearings fastened with washers and 3.5x25 mm wood screws (as shown in the photo). The spool's weight should keep the bearing steady, but cable ties can be used if needed. However, after several prints, it was found that this modification isn't as useful as initially thought, as the lack of friction causes the spool to swing excessively and potentially tangle the filament. Therefore, this modification is not recommended anymore.