Filament drybox

Parts:

Container X1
606z bearing X2
PC4-M10 fitting X1
M3*6 screw X4
M3 washer X4
M6 washer X2
PTFE tube D4x25mm X1 , glued inside (plug for PC4 fitting)
Aluminium tube D6x17mm, flared on one side X2
Sponge 85x64x41mm or similar x1 (protection against filament tipping and spool rotation)
Silica gel pack X1

Printed parts:

Plug X1 (hard flex or rubber)
Holder X2 (any tough or hard material)
Spring shaft X1 (any tough material)
Shaft adapter X1 , optionally (any tough material)

Tools:

Drill bit D3.2 - 3.5 mm
Drill bit D2.5 mm
Tap M3
File, hammer (for chamfering, flaring and pressing), but lathe or drilling machine will be better.