Open center desiccant holder

This desiccant holder with screw-on lid fits inside two stacked filament spools.  It is 50mm in diameter by 135mm long and was designed for use in the TBMAXS 10 Lb food storage bin that is 9.4" W x 9.4" D x 7.2" H.  The bin fits two 1Kg rolls of filament with very little wasted air space.  These bins are stack-able airtight containers with easy opening push button lids.  2 Lb of desiccant can fill 7 of the desiccant holders with about 125g each.

The design is hollow inside to allow airflow both from the outside and inside to place all of the desiccant beads within 8mm of an outside wall. Air hole slots are 1 mm to contain the 3-5 mm desiccant beads.

The funnel screws to the desiccant holder just like the the cap to prevent accidents when filling.

The Autodesk Fusion model has parameters for diameter and length to allow for easy changes of dimensions.

It was printed in PETG with no supports.