Filament dry box kit

This is the parts I designed or remixed for my dry box.
My current setting is 3 spools + one silica spool per box, but is can easily be adapted to basically any size.

Innovation compared to other dry box accessories:
-Wing nut mecanism on the axis to compensate for plastic box sagging (set it to push slightly outward)
-Pass through integrate a sponge to avoid dust, act as a seal (no need of pneufit) and could be used as an oiler
-Hygrometer holder adapted to most domestic hygrometers, uses a "floating" attachment method, to avoid contact with the bottom of the side of the container = more accurate measurement.

**"Non printable Hardware" needed:**
-Stainless threaded rod M8 cut to appropriate length for your box
-2 M8 wing nuts
-For each spool : two cheap ball bearing of the 608 type (bought them in bulk on amazon - 0.65€/ unit) for the spool holder
-Each pass through (1 per spool) : Four 3mm screws and nuts with conical head (mine are 3*16, but are too long)
-For each hy