Slide over spool holder extension for 2kg spool

Spool holder extension for original Prusa spool holder.
For MK3S+ and MK4 spool holders.

New part

Overview

The old part (1) is straight, new part (2) is more tapered. This helps to have a gap between Filament Guide addon and filament spool.
Might also help that smaller spools stay inside, near to the spool holder.

Gap to filament guide add on.

Assembly Instructions:

Clean the sliding surface (1) with sandpaper to remove seams.

Grease surface (1) slightly
For example with Universal lubricant from Prusa.

Take a knife and scrape down the edge from original spool holder arm, on both sides.
 

Slide the extension over the original arm of the spool holder.

Lock the arm using a screwdriver.

Old part

This is the gap when using the old part.
It is a tight fit with the filament guide add on.

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Designed with the help of FreeCAD, made possible by the dedicated efforts of its community.

https://www.freecad.org/