Slim Desiccant Cartridge - For Cereal Containers

Fill, Dry, Swap: The Slim Desiccant Cartridge

Most DIY cereal box dryboxes have a common flaw: loose desiccant or baskets built into the base. Managing loose beads at the bottom of a container is messy, makes it difficult to swap spools, and risks spills during filament changes. 

I wanted a solution that felt like a part of the system, not an afterthought. This slim desiccant cartridge allows you to pre load, use and swap desiccanty easily. It's slim design fits between the side walls of 68mm spools and nests into small spaces. The slotted vent design allows for quick and consistent printing while allowing 50% air permeability, much more than those hole or hex designs.

When printing these in PET-G or high temp filaments, you can dry the desiccant right in the cartridge, saving you the time and the mess from refilling baskets. 

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Features

• Integrated Cartridge System: A "load-and-go" design that allows you to fill, install, and swap desiccant without ever spilling loose beads into your drybox.
• Recharge-Ready Design: When printed in heat-resistant materials (PETG/ASA/PC), the entire unit can be placed directly into a filament dryer, allowing you to "recharge" the silica beads without emptying the basket.
• High-Efficiency Airflow: Optimized slot geometry provides ~50% air permeability, ensuring rapid moisture extraction from the surrounding environment.
• Triple-Chamber Rigidity: Internal dividers provide structural reinforcement, preventing the slim walls from bowing or bulging.
• "Dead-Space" Optimization: Ultra-slim profile specifically engineered to fit in the narrow gap between the filament spool and the interior walls of standard cereal-style dryboxes.
• Visual Monitoring Friendly: The open-slat design allows for instant visual inspection of indicating silica gel (Orange-to-Green) so you know exactly when it’s time to recharge.

Specifications

• Compatibility: Slim to fit all cereal containers and dry boxes. Pairs perfectly with the DIY dry box I designed
• Filament Type: PET-G recommend. Print in high temp filaments if you plan on recharging/drying the desiccant while in the cartridge
• Dimensions: 
  • Width - 60mm
  • Length - 100mm
  • Height - 18mm
• Capacity: Holds +60 grams of Desiccant/Silica Gel
• Filament Required: <25 grams of filament

Assembly Guide

Credits / Licensing

• Design by PixelFanLabs – With a curious mind, integrity, and your hands in the soil, you can create anything. 
• License –  All Rights Reserved
  • Personal Use Only: You may print this for your own use.
  • No Redistribution: Do not re-upload or distribute these digital files on any other platform.
  • No Derivatives: Modification of this design—including the removal of the engraved PixelFanLabs signature—is strictly prohibited.