Spool Bearing Ender 3

I was always annoyed by the fact that the spool builds up a lot of tension until it slips and rolls further.

To mitigate this, with great success I have to say, I created some "braces" for the spool holder to reduce friction between the spool itself and the metal rod that holds it.

Clearly it it much easier now for the spool to turn with the force the extruder applies to it.

It fits to all the spools I used so far.

Let me know if you need a longer version for some XL spools or so.