Universal/Modular Spoolholder

UPDATE 24.11.2023

I've made the following changes to improve the stability:

- using 2 bearings for the one-sided mounting option
(can also be used for two sided option of course)

- reuploaded all parts with higher stl resolution,
which should lead to better optics and due to better surfaces
also a better bearing seat

- uploaded all important bearing parts now
with different fitting options in order to fit your individual environment

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Overview:

Modular spoolholder with integrated bearings, that provides the following:

- reduce friction for filament pull
- different spool width and inner diameter possible
- different mounting possibilities
(added "raw" adapter as step for custom solutions)
- fast and easy spool change

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