Upside down Filament Box for small Printers

Here is my version of the filament box.

Since my printer has only a small bed of 180 x 180 mm, I needed a solution to print the parts splitted in half. Both sides can easily be cut to the right length with a pair of scissors and then glued together with CA glue.

Hardware you need to buy:
1x 4 litre food storage container (the model I used has only 3 small ribs and a hexagon in the lid. There is also a model with a huge dent for gripping but Idk if the base will fit there too)
4x 608ZZ bearings
1x PC4-M10 PTFE tube pneumatic fitting OR you can print it yourself
1x round hygrometer
PTFE tube of desired length
Silica Gel

Things you need to print from other creators:
2x Axle by GunplaMark
4x Roller_42-77mmSpools by JK3D
1x Knurled PC4-M10 filament pass through with 'funnel' by SpectreGadget
1x Desiccant Lid by GunplaMark AND Dessicant Cup by hardiebotha [or any other related design you like]

Print settings
I printed all parts in PETG using Bambu's "Strength" preset.
0.4 mm nozzle
0.2 mm layer height
25 % infill

The ring/holder for the hygrometer doesn't need support (enable “support critical regions only”)
The bearing holder does need support.
Both parts of the base have been printed with a 5mm brim.
The Z-Seam on the 4 rollers could prevent them from rolling smoothly. To fix this, I printed 2 with the seam position “aligned” and the other 2 with the seam position "back". I then alternated them per axis. And/Or just scrape off the seam with a knife.

All the parts you need can be printed in one run on a 180mm x 180mm bed.

Tinkering

After printing the parts and removing the supports and brim, both parts of the base are glued together with CA glue.
I recommend putting them together in the lid: Push the two parts to the sides to make sure they fit snugly into the lid. Then mark the length and cut the wings with scissors. Finally, glue them together, being careful not to glue the base to the lid as well.


While the glue is drying, assemble the rollers. Do not forget to put the two bearings in the middle of the axle before attaching the rollers to the sides.
The bearings and the hygrometer should sit firmly in the brackets.

At the former bottom, now the top of the container I drilled a hole fore the PC4-M10 fitting. 10 mm is fine, but 9,5 mm is just tight enough for the thread to bite firmly.  I than removed the two pads with a chisel, so that the printed pass through sits flush and evenly on both sides of the container.
Make sure you drill the hole on the side where the scale is not.

 

Et voilà!
After filling the basket with some silica gel and inserting the PFTE tube, your filament box is ready to use. I recommend drying your filament in a special dryer before storing it in the filament box. Once sealed, you will see the moisture decrease to around 10-15% within a few hours.