Prusa i3 MK2 - Filament Spool universal Wheel and One Piece Support
thingiverse
The Prusa i3 MK2's original wheel supports were my first test, as I replaced them with new ones designed for the 83mm diameter filament roll. Although they're loose, these supports work on most standard rolls of filament. The photos show the arms reprinted from black PETG and the improved wheel attached here, which was printed from transparent PETG (T-Glass). After making these changes, I soon discovered that removing those arms every time I switched materials was a real hassle, so I decided to design a one-side fix support shown in the picture. This new design fits tightly and requires some force to push it into place.
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