These desiccant holders-known in my world as the “Ultimate Desiccant Container” or the “London Bridge Container” as they are specially designed to fit underneath a roll of filament. Originally, I created them to fit inside a storage box that I'd purchased, which perfectly held five rolls of filament.

Finding the Perfect Size

While searching for a storage container for my filament, I came across an 18-liter box at my local hardware store that holds five 1kg rolls of filament. My goal was to design a desiccant container that could maximise the amount of desiccant that could fit in this storage box underneath one of the rolls.

Monitoring Humidity Levels

To maintain optimal conditions, I incorporated a hygrometer into the system. This addition allows me to precisely monitor the dryness of my filament in the box. With the 18-liter container-paired with my first generation long tray I've been able to maintain a steady 10% humidity level, offering remarkable reliability.

An Efficient Indicator

A bonus feature of this setup is the visual humidity indicator on the front of the plastic box. When the humidity exceeds 10%, I know it's time to replace the desiccant. Thanks to their large capacity, these trays hold an impressive amount of desiccant.

Reach out on my contact page if you want one. Email me or fill in the form and I will send you the print file.

Otherwise you can find it on Cults