Spool Hole Resizer / Spool Holder

This resizer goes into the hole of your filament spool to make it fit better on the spindle of your printer. Using mine on my Ender 5 might want to check or modify to fit what you have.

The ridges on the bolt and nut make sure that the spool is always in center, making for a smoother feed and no more jerking on the extruder. The bolt is also threaded all the way to the head to allow use on smaller spools.

Model has been revised since the pics were taken though the concept is still the same. The nut is now a bit larger for better grip and the threads now go all the way down the bolt to work with more spools.