This is a variation of a 1kg single filament spool box that includes a silica gel compartment and hydrometer.
Main design consideration where:
- Airtight cereal box.
- Holds in a built-in container about 100 cc of Silica gel beads.
- 2x Bearings only.
- Reasonable priced hydrometer.
- No supports required for printing any part.
- Easy placement and removal of a 1 kg filament spool.
- Tested with cardboard and plastic spools from eSUN, Polymaker, Overtune. Please let me know if you find any 1kg spools that do not fit/work with this storage.
Parts and materials used:
Notes
- IMPORTANT: The flanged rollers must be placed on the front towards the hydrometer, otherwise it will not fit in the cereal box.
- Make sure there is no play between the rollers, axles, bearings and bearings supports. If there is a lot of play, the filament spool will wobble. The axles are hexagons instead of cylindrical, for easy printing. In case they print too loose for the rollers or the other parts they interact with, then slightly scale them up and trim as needed.
- In case the silica gel box's covers/doors are loose or open-up, there is provision to glue two 5x2 mm magnets on each cover to keep the covers closed.
- The pre-sliced files Sequential printing-Base and Sequential printing-Rollers are for 300 x 300 mm print beds or larger.
- If the bearings are loose with the holder, a thin CA glue film can be applied in the inner wall of the plastic bearing holder; be careful not to get any CA glue inside the bearing.
WARNING: Lately I have some issues using the cardboard spools from some filament manufacturers, as they do not rotate true, and the spool comes off the rollers and jams. When that happens, the spool cannot rotate any more, and the print will fail. Plastic spools do not have this issue. I am working on a solution for this issue.