Unlockable loose Filament Spool

by TheGoofy, published

Unlockable loose Filament Spool by TheGoofy Dec 21, 2016
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Who doesn't know this problem: Tons of loose filament samples. Without spool, they are tangled up, and you certainly don't (want to) have a spool for each sample. For changing a sample it's needed to un-wind and re-wind the filament ... :-(

With this 3d-printable spool, it's possible to unlock the spool and simply remove the sample.


The spool is fully 3d-printable, and it's simple to assemble (without need of additional screws) - it just snaps together. Even its diameter is adjustable.

Snap-Fit design re-used from:

Hints for handling loose Filament:

  • Always rotate the spool when winding or unwinding the filament (no twist)
  • Fix some tape as a label at the END of the filament, note relevant print-settings
  • Keep start of filament away from spool, avoid tangling or over-crossing filament
  • Use filament cleaning sponge for printing, loose filament quickly collects dust

Print Settings

Printer Brand:








0.15 mm


Printed with PETG

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Any chance you can update the info and include how many of each part need to be printed? I mean I think most people can figure it out but for simplicity sake it would be nice.

I'm still not sure how you put the unspooled filament onto this. Can you show us?

Im sure this is a problem on my end, however, the spurs do not fit on my printed forks. Everything was made to original scale. Would scaling up a bit to compensate help possibly?

Scaling is certainly the simplest workaround. But if you want to print other things, where individual parts need to fit together, I recommend to calibrate your printer and tune the slicer settings. Once done, it makes your life much easier. Here are some explanations:

I printed this out to make my Maker Box sample filaments easy to spool into my printer. I have had no luck getting the sample filament to spore properly on to this model.

What am I doing wrong?

Working great! Thank you!

Clever design! :) Thanks for sharing the files.