Desiccant jar for filament spool: 6 Types, 2 Sizes

A compact and practical desiccant jar designed to fit inside filament spools, helping you maintain dry filament for better print quality. Each jar fits perfectly in the center of the spool hub and comes in two height options to match your storage needs.

6 Spool versions included (different profiles):

• SUNLU / JAYO non-reusable spool (black)
• SUNLU reusable spool (blue) - Pay attention to the spool sticker (it must be triangle-ish), and the spool has no circular lines around the central hole. Otherwise, it is a different spool, and the jar fill does not fit.
• SUNLU reusable spool with concentric lines around the central hole (blue) 
• Bambu Lab spool
• CREALITY spool
• GEEETECH spool

2 Sizes Per Version:

• Full-size – fills the full spool height (~150g desiccant capacity)
• Slim – about 1/4 height for lighter desiccant loads or extra space

While designed for silica gel beads, you can also use it to store bolts, spare parts, or small accessories.

No more excuses for soggy filament—dry filament means better prints!

Happy printing and stay moisture-free!

P.S. If you are looking for a solution to reduce 3D printer noise, have a look on my soundproof enclosure design crafted from IKEA furniture. This enclosure reduces printer noise and ensures impressive 36.5 dB(A) at just 1 meter away. Detailed instruction how to build it you may find here.