What filament absorbs humidity the fastest?

Most Hygroscopic Filaments – Nylon: Despite being extremely heat- and impact resistant, Nylon has one huge drawback: It absorbs humidity at an extremely fast rate, since just two hours of exposure can make it unusable.

How quickly does filament absorb moisture?

Because some 3D printing filaments are hygroscopic, meaning that they absorb moisture from the air, prolonged exposure to even moderately humid room air causes moisture saturation. After 150 hours in standard conditions, PLA filament may swell up to 40 micrometers before reaching its saturation point.

How fast does Nylon filament absorb moisture?

Nylon, polycarbonate, and copolyester filaments are all very hygroscopic and susceptible to hydrolysis when printed in the presence of water. Nylon and PC can absorb enough water in 48 hours to ruin prints.

Does PETG filament absorb moisture?

Many filaments can absorb water from the air and PETG is one of the most notorious. Because PETG is hygroscopic, you need to dry your spool before using it, which can easily be done using a PrintDry PRO to pull the moisture out of your filament.

Is PETG affected by humidity?

It is important to store and print your PETG materials in their optimum environment (below 20% humidity) to prevent moisture absorption, as excessive drying will degrade the filament.

Does PETG swell in water?

PLA and PETG absorb moisture, but do not dissolve in water. Usually what a person means by waterproofing is water won’t seep through the layers of the material and leak out of a container.

How do you remove moisture from a PETG?

One of the easiest ways to dry out PETG Filament is by using a regular home oven. For the best results, you should set your oven’s drying temperature at 65-70°C (149-158°F) and run it for around 4-6 hours to completely dry out the filament. Make sure to clean out the oven before drying your filament.

How long will PETG last?

Most PETG filaments can be stored for 2 years or more before it becomes brittle and cracks. You should keep it in a cool place and away from moisture or direct sunlight to make sure it retains its qualities as long as possible.


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