Simple spool dehumidifier for filament spool with cheap humidity meter. It fits in the center of the spool wich is placed into (vacuum) bag.
It can be printed with PLA or any other material. It's not necessary, but you can place printed barrier between humidity meter and silica gel.
The humidity meter fits into the groove and then just turn it counter-clockwise.
Original print from X1C fit perfect for me, but some users have problem with fitting, so I added lid with tolerance -0,1 mm and -0,2 mm to print files.
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