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Filament Drying Desiccant Capsules

Ref.: SLC-DRYING-DESC

17.85 €

Tax excl.

Quantity

In stock -9 units available for immediate shipping.
units available for shipping in 5 - 8 days Available for shipment within 5 - 8 days

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Approximate delivery date: Thursday 18 December - Tuesday 23 December

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Slice Engineering is a Florida-based manufacturer of high-quality components for FDM 3D printers, known for their precision hotEnds. In addition to nozzles, spare parts, and filaments, they offer accessories such as the 3D printing filament desiccant, designed to keep filaments dry and preserve print quality.

Filament Desiccant 2-Pack: 3D Moisture Protection

The Slice Engineering filament desiccant uses infinitely rechargeable activated alumina, a material ten times more powerful than silica gel and completely non-toxic. Each stainless steel container is designed to fit in the center of the filament spool, creating a relative humidity (RH) gradient that absorbs both surface moisture and internal water particles in the filament.

Reduces relative humidity to almost 0 in 6-10 hours inside an airtight container.
Includes humidity indicator card to monitor RH levels.
Available in 2-unit packs (2-pack).
Compact and compatible with other filament drying systems.

Filament desiccant with humidity card

Image 1: Filament desiccant with humidity card. Source: Slice Engineering

Impact of Moisture on Filaments

Moisture can severely affect the quality of 3D printing filaments. Main issues include:

Brittleness: the filament becomes fragile and may break.
Diameter variation: problems in Bowden systems and irregular extrusion.
Bubbles and noise: moist filament creates small pops when melting.
Under-extrusion and clogs: moisture can block the hotEnd.

Image 2: Effects of moisture on 3D printing filaments. Source: Slice Engineering

Filament Compatibility

The desiccant is useful for any filament but is especially important for hygroscopic materials such as:

PA (Nylon), PA-CF (Nylon with carbon fiber)
PVA, TPU/TPE
PEEK, PEKK, PEI, and other advanced filaments

Common filaments like PLA and ABS are less sensitive, but storage in humid environments can affect print quality.

Desiccant capsules are especially recommended for hygroscopic materials. Source: Slice Engineering

Image 3: Desiccant capsules are especially recommended for hygroscopic materials. Source: Slice Engineering

Conclusion

The Slice Engineering filament desiccant is a compact, efficient, and safe solution to keep moisture under control in 3D printers. Its use helps preserve filament quality and ensures more precise and consistent prints, being especially recommended for hygroscopic or moisture-sensitive materials.

The stainless steel capsule fits perfectly in the center of the spools

Image 4: The stainless steel capsule fits perfectly in the center of the spools. Source: Slice Engineering

General information
Manufacturer	Slice Engineering
Technology	FDM/FFF
Quantity	1

Dimensions and weight
Dimensions	±49 mm x 59 mm

Other
HS Code	3923.1

Using the Filament Drying Desiccant is very simple.

Remove the outer shrink wrap.
Take off the cap.
Place the canister into the center of the filament spool. The dimensions of the canister are 49 mm in diameter (+/- a mm) and around 59 mm in height, so it should fit perfectly.
Next, place the spool with the desiccant in an airtight container and monitor the humidity levels on the attached humidity card. When the circles turn pink, it means the humidity has been removed from the container and the desiccant should be recharged.

Steps of setting up the Filament Drying Desiccant.

Image 1: Steps of setting up the Filament Drying Desiccant. Source: Slice Engineering.

To recharge the Filament Drying Desiccant, place the canister in an oven heated to 200 °C or more for 2 hours to remove the water from the alumina. The full instruction sheet can be found in the downloads section for this product.