How do I know if my filament is wet?

Signs include popping or crackling sounds during printing, excessive stringing, poor surface finish, and visible steam from the nozzle. Nylon and TPU absorb moisture fastest and may show symptoms within hours of exposure.

Can I use a kitchen oven to dry filament?

Yes, but with caution. Most kitchen ovens are inaccurate at low temperatures and can overshoot by 10-20°C. Always use an oven thermometer. PLA especially can warp if the temperature exceeds 50°C. A food dehydrator gives more consistent, safer results.

How long does dried filament stay dry?

It depends on ambient humidity and the material. In a sealed container with desiccant, filament can stay dry for months. Nylon left in the open can absorb enough moisture to cause problems within 24 hours.

Does PLA absorb much moisture?

PLA is less hygroscopic than Nylon or TPU but still absorbs moisture over time. After several weeks in humid conditions, PLA will print noticeably worse. Drying at 45°C for 4 hours restores it.

3DPrintCalcs

Filament Moisture & Dry Time Calculator

Calculate drying temperature, time and storage recommendations for your filament.

Filament Type

Select the material type

Current Condition

Select an option for current condition

Ambient Humidity

Percentage value

Spool Weight

Weight of filament on the spool

How We Calculate This

Drying Recommendations

Dry temperature varies by material to stay below glass transition
Dry time = Base time for material x Condition multiplier
Condition multipliers: New sealed (0.25x), Recently opened (1x), Out for weeks (1.5x), Visible moisture (2x)
Storage target is lower for highly hygroscopic materials

Always store dried filament in airtight containers with silica gel desiccant. Vacuum-sealed bags work well for long-term storage.

Frequently Asked Questions

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Calculate shore hardness and flex properties for TPU and flexible filaments.

Material Weight Calculator

Calculate the weight of a printed part from its volume and material density.

Last updated: March 2026

All calculations are estimates. Always verify settings with test prints before committing to final prints.