Prusa MK4 Spool Holder For 20x20 Extrusion (Ender 3's and similar)

Prusa spool holder remixed to fit ender 3's and other printers with 20x20 aluminium extrusion.
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updated October 31, 2025

Description

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Prusa MK4 spool holder remixed to fit Ender 3's and other printers with 20x20 aluminium extrusion.
There are two versions, the one with four screws is recommended if printing a single holder, but for a dual holder you can use either one.

The four screw version hasn't yet been tested, but it should work fine as it's only a small change.
Please report back how it works for you!

Hardware

  • Use M5 screws and T-Nuts to fasten it to the printers frame.
  • Installing M8 threaded rod to the top recommended for strength (as designed by Prusa)

https://ko-fi.com/aasikki

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Model origin

The author remixed this model.

Differences of the remix compared to the original

Modified to fit printers with 20x20 aluminium extrusion.

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