Filament dry box

My dry box for 1-4-8-12-... spools of filament. In my case 4 spool There are many dry box plans out there. This one is mine.

Ingredients:

20l air tight box.
8qt M3 screw + screw nut
PVC pipe
4qt pneumatic connector
PTFE tube

The length of the PVC pipe is 29cm, but it can be even longer or shorter. It depends on how big a box we have. Use something more massive instead of PVC pipe, because if 4 spool are full, the pipe will bend!
Print the brackets 2 times, screw them up and use them!

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