Printer parts

Silica Gel Containers for Filament Spools: STL Files

This collection gathers 3D models for desiccant holders used with filament spools: hub inserts, boxes for storage containers and trays for dryers. They are made for 3D printing and are meant to keep beads next to the filament instead of loose in the box. Most files are small, so they print quickly and are easy to reprint in different sizes. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

A Polyzon collection · 48 models from 3 platforms

How this collection is put together

Polyzon assembles this collection from search results on the connected platforms. Repeats and models without a preview are removed, weak matches go to the end, and the rest keeps the search order. Models belong to their authors — check the terms on each model's page.

Selection rules: the Polyzon editorial team · Text updated 2026-10-13

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About the category

«Silica Gel Containers for Filament Spools: STL Files»

The models fall into a few groups. Hub inserts slide into the center hole of a spool and stay there while the spool turns. Dry box inserts are larger flat boxes that sit in a storage bin or food container next to several spools. Some designs use a threaded or snap-fit lid so the beads stay closed, and others are parametric, meaning the size can be changed in the source file before slicing. Trays shaped for a specific dryer are a separate group.

When choosing a model, check the inner diameter of your spool hub and the outer size of the box you plan to use, since these vary between spools and bins. Look at the wall thickness and the vent openings: beads need airflow, but the openings must be smaller than the beads. Read what the author lists about material and settings, and look at photos of real prints to judge how the lid closes. Decide whether the part needs supports, and whether a flat or a rounded shape fits the space you have.

To find more options, try other names for the same idea: desiccant holder, silica box, drybox insert, bead container, spool core holder, filament dryer tray. Related searches include filament storage, dry box, hygrometer mount and refillable desiccant cartridge. If a model is close but not the right size, check whether the author published a parametric version or several size variants.

FAQ

Frequently asked questions

How does a silica gel container stay inside a spool?
Most designs use the center hole of the spool as the mounting point, either with a friction fit or with a lip that catches on the hub. Check the hub diameter listed on the model page against your spool before printing.
What bead size do these containers take?
Vent slots and holes are usually sized for common bead diameters, but this differs between models. Read the description for the opening size and compare it with the desiccant you already have.
Do these parts need supports?
Many are designed to print flat without them, while threaded lids and rounded shapes may need supports. The author's page usually states this, along with the orientation used for the photos.
Can I scale the model to fit another container?
Scaling works for simple boxes, but it also changes wall thickness and the gap between lid and body. Parametric versions let you set the outer dimensions directly instead of scaling the whole part.
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