I had everything I needed to make this laying around the Schlaboratory – so I designed and printed the bases.

Easily adjustable for any width spool.

======== UPDATE ========
PLA can be tenacious stuff, and when you get toward the end of a spool, you may find that the spool doesn’t have enough mass to stay on the rollers if you are feeding sideways. Initially, I ran the filament UNDER the front threaded rod (with some padding to keep the threads from gouging), but I made a guide to mount under the front element that helps to pull the spool of filament DOWN, onto the rollers.

___
**ATTENTION**
This work is licensed under the [Creative Commons – Attribution – Non-Commercial license](http://creativecommons.org/licenses/by-nc/3.0/). This license applies only to the files and documents available for download from the **Thing Files** section of this Thing.
**All other related content (photographs, videos, and verbiage such as contained in “Description” or “Instructions” ) are excluded from this license. with all rights reserved, unless specifically available for download** This notice constitutes a clarification, not a change, to licensing for this design.

You will need:
-2 – lengths of threaded rod (8mm or 5/16) I used approx 7-1/2″ or 190mm
– 4 – 608 bearings
– 4 – fender washers
-16 – nuts
-16 – normal washers

The photos should explain assembly better than anything I might write.

You may have to wrack (twist) the assembly to persuade it to sit flat, but it will stay flat after that.