How to dry PETG: follow the spool maker

Find the correct PETG drying row and avoid treating carbon-filled variants as identical.

By the Filament Drying Lab team · Checked 2026-10-25

Choose a PETG drying setting from the exact product's data sheet. Keep PETG, PETG-CF and other modified products separate when looking up the instructions.

A maker-specific example

Prusa lists 55 °C for 6 hours for Prusament PETG (all versions). That row applies to the named Prusament products; check another maker separately. Source: Prusa, checked 25 October 2026.

Match the whole label

The drying table includes separate maker rows, so you can see where recommendations differ. Don't take a setting from one brand and assume it is the best setting for another.

For a spool with no clear instructions, check the manufacturer's support pages before heating. A generic preset on the dryer is useful as a menu shortcut only after you have checked it against the filament guidance.

Prepare a repeatable cycle

Check the spool's heat limit, load it as the dryer manual shows and leave the specified airflow route clear. Note the temperature and duration you actually select. If the dryer cannot reach the required temperature, don't assume that adding an arbitrary number of hours makes it equivalent.

Keep the improvement

Once dried, move the spool into protected storage or a supported print-through arrangement. Secure the loose end before moving it so the next loading attempt doesn't start with a tangled reel.

If stringing remains, avoid treating that one symptom as proof that PETG needs another drying cycle. Compare a small print before and after drying, keeping the profile unchanged, then follow the maker's troubleshooting process.