Ideal for long-term filament storage without modifying or drilling your container.

QUICK OVERVIEW

Purpose: Threaded desiccant lid insert for upright cereal-box filament storage

Container type: 4 L plastic cereal containers

Orientation: Designed for upright storage (not inverted feeder boxes)

Capacity: Holds approx. 1/8 cup desiccant beads

Seal: Uses the container’s original gasket for an airtight fit

Design: Simple 2-piece threaded locking system

Printing: No supports required for standard version

PROJECT BACKGROUND

This is a threaded lid insert for anyone using 4 L plastic cereal containers to store filament in the upright position.

Most cereal-box dry box designs are built to feed filament directly to a printer, which means flipping the container upside down. There’s absolutely nothing wrong with those designs — but in my case, I’m simply storing filament, not feeding printers from the box.

This insert replaces the original hinged lid with a clean, low-profile threaded desiccant holder that keeps moisture under control while allowing the container to remain upright on a shelf.

DESIGN DETAILS

Fits a round 60 mm opening with the existing gasket left in place

Holds approximately 1/8 cup of desiccant beads

Original hinged lid is removed and replaced by this insert

Two-piece threaded design locks securely into place

The existing gasket provides the airtight seal — no extra parts needed

PRINTING NOTES

Printed examples shown were done in PLA using:

Standard 0.4 mm nozzle

Default slicer settings except where noted in the .3MF

Print orientation:

Lid: top down / threads up

Container insert: bottom down / threads up

Supports are NOT required for the standard version but should be used for the Creality version lid

Slower print speeds are recommended for cleaner threads. Settings in the .3MF file.

ALSO INCLUDED

A Blank lid version is included for those who don't want a brand-matching look

Suggestions and improvements are always welcome — and as always, pics of your prints are encouraged!

VERSION INFO

v 1.0 - Designed as a simple desiccant-only solution — a hygrometer-ready version may be added in a future update if anybody has a need.

Thanks for looking, and Happy Printing!

Cereal Box Filament Storage Lid Desiccant Holder

0.16mm layer, 3 walls, 15% infill

0.2mm layer, 2 walls, 15% infill