Make sure to properly feed your MakerBot else it might get angry. This laser-cuttable feed spool will make the job easier.
- Widened the base to make it more tolerant of skew
- Reduced the inner splines diameter to make it easier to load filament.
You will need:
2 sheets of 6mm ply, 300mm x 450mm (12" x 18")
2 608 skate bearings
2 8mm nuts
2 8mm washers
1 piece of 8mm threaded rod or a bolt about 130mm long.
Cut the .svg file out twice. Assemble the stand using wood glue (and a nail gun if you are impatient like me.) When assembling the spool itself, only put glue on one end of the internal splines. Place the other end on to hold things straight while the glue dries (and when using the aforementioned nail gun.)
When everything is dry (or at least nailed!) Remove the unglued side. Place your filament over the splines. You may need to loosen up the filament first, don't try jamming it down over the splines. Re-cover with the side and slip it between the supports of the stand (this may be easier to do with everything on it's side.) Slip a washer, bearing and nut onto the threaded rod and run this assembly through the center of the spool. Note that the washer goes between the bearing and the spool. On the other side of the spool install the washer, bearing and nut and tighten down. You may need to pull the tops of the support away from the spool slightly to prevent binding.
You may optionally embellish your spool with colored sharpies.
You are now ready to feed your MakerBot!