I made some modifications to an excellent model, for me this is the definitive model.
use 608 bearings, or if you don't want to buy them you can also not print Bearing guide and use the spool holder alone.
Pay Attention Please: with Bambulabs Spool you have to use it alone without bearings, it will run without problems.
It fits all Cereal Boxes sold on Amazon Link Amazon.it OR THIS: Amazon.it
Look that they mush be 4LT
for bambu spools I suggest this Amazon.it Amazon.de
not tested with bambu spools https://amzn.to/48Cc80k
Try my Swatch Board and my Filament Swatch
Try also Filament Swatch Holder
if you like please help me funds my design and filaments for prototypes PLEASE Consider To Download this model and boost it, IT IS COSTLESS FOR YOU and SUPPORT my work.
thank you
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