Dry-Box- Filament holder for Clas Olson Storage Box

Filament spool holder to keep the open filament dry over time.
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updated January 20, 2026

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The filament spool holder is designed to keep filament dry over time, using the inexpensive 20‑liter storage box from Clas Ohlson. It consists of three parts: a right and left support, and a side basket for desiccant bags purchased from Biltema. In addition, it uses three PVC pipes from Biltema, which I cut to a length of 299 mm. This made the entire setup fit perfectly inside the Clas Ohlson box.

The lid has been sealed with a rubber gasket to ensure it is airtight.

This has been printed completely without support.

I printed it in PLA.

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