Ball Bearing Spool Rollers
thingiverse
Spool Rollers - utilizing precision ball bearings for virtually frictionless spool rotation. Mounts seamlessly onto a 30mm spool holder compatible with popular models like Creality and others within the same size range. Employing 5x10x4 mm ball bearings commonly used in radio control cars, paired with M3 countersunk screws. For optimal results, use M3x6 CSK screws. Securely fit the ball bearings and cable tie to the spool holder arm in their designated positions. To simplify this process, consider pre-tapping holes for your bolts; however, M3 should be sufficient to cut its own thread in PLA materials. This solution has been successfully implemented on the Creality Ender 3 model.
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