Army of Duckies

Mendel90 spool holder (customizable)

by CookieMonster, published

Army of Duckies
Mendel90 spool holder (customizable) by CookieMonster Apr 19, 2013

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Yet another Mendel90 spool holder. I designed this because I had a piece of 10mm round steel lying about and I wanted a pair of brackets in which it would snap-fit.

The snap-fit works fine and the bracket seems sturdy enough. I have noticed, though, that the back plates of the printer are quite flexible. This might be a problem: if you bend the plates outward far enough, the rod cal fall out. I don't think this will be a problem in daily operations, but I'll have to keep an eye on it.

Update (v1.1) (20-4-2013): made the screw holes a bit elongated, so the holes in the back plates don't have to line up perfectly.

Update (v1.2) (20-4-2013): improved the rod support bit, with a better and more predictable snap fit setting.


  1. [optional] Customize the thing to your taste.
  2. Print two of these things on your Mendel90 (you do have one, right?)
  3. Drill two holes in each back plate (25mm apart by default) .
  4. Affix the brackets using M4 bolts. Tap the back plates if you like, otherwise just use nuts.

I used Cura to slice it and then printed it on my Mendel90.

  • .3mm layers
  • .8mm walls
  • .6mm solid top and bottom
  • 30% infill

Next time, I might make the solid top/bottom thicker (.9mm) and give it more infill (50% or so).

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want to make one 160mm tall with a 9mm rod but every time i keep getting an error when i hit create thing say its uploading but then stops and says error? can you see if you could make one that size and upload it. i make smaller one and that worked fine?
help stefan