Roller Bed for filament

thingiverse

This bed supports both small and large (including heavy) rolls without any adjustments on top of Creality CR-10S Pro V2 (and possibly others with a frame on top). The maximum roll width is approximately 10.5 cm, as seen on 2.3 and 3 kg rolls. The operation is smooth, and when there's no filament spool, it saves about 12 cm in printer height. To install, simply print two base plates and two cylinders, then insert four bearings into the cylinders. Mount the unit onto four taps to form a solid structure (glue can be used for additional strength, but first, make sure it fits properly). Finally, screw the unit on top of the printer. The bearings I obtained from my local car store were dimensioned at 26 mm outside, 10 mm inside, and approximately 10 mm wide. Smaller bearings could fit with a scaled cylinder (non-uniform X and Y), but the axle dimensions with the tap cannot be simply scaled - sorry. The cylinders have holes for the bearings that are exactly 26 mm in diameter - print in X and Y scale at 100.2 or 100.3% to ensure the bearing fits inside without excessive force, depending on your printer, filament, and bearing of course. For mounting, I utilized two screws and T-nuts from the original spool holder. I printed the cylinders in PLA for added stiffness and the base plates in PETG for sturdiness - it worked well, but using all PLA or all PETG might also work.