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Before using the Prusa USS Drybox for the first time, it is important to prepare it correctly to ensure a stable low-humidity environment for your filament.
This article covers the initial assembly and first filament loading process. For complete product overview, humidity management, maintenance, and printer-specific installation guides, see the main Prusa USS Drybox article.
The Drybox is designed to slow down moisture absorption using silica gel. It does not dry filament. If your filament is already moist, it must be dried in a dedicated drying device before use.
Release all latches and open the lid.
Check that all seals are properly seated and not damaged.
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On the outer packaging, you will find a label sheet with the most commonly used filaments, along with a few blank labels that can be torn out.
Prepare the label you intend to use first. Any remaining labels can be stored for future use.
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Remove the TPM40 hygrometer from its packaging.
You can switch between °C and °F using a double press of the button.
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Open the aluminium packaging of the silica gel.
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Place the filament spool inside the Drybox with the filament end oriented toward the filament outlet (grommet).
Secure the loose end of the filament so it does not unwind.
Use the grommet system:
Before closing the Drybox, insert the filament label if you are using one.
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Close the lid and secure all latches.
Make sure:
Open the grommet again.
Take the filament end and guide it through the PTFE tube.
Insert the PTFE tube into the grommet opening.
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Once closed, allow up to 1 hour for humidity levels to stabilize.
Check the hygrometer reading before printing. If humidity is too high for your material, replace or regenerate the silica gel.
2 comments
Also, given the color and transparency of the dry-box, the visibility of the measures is not so great; maybe a clearer plastic would be more adequate.