Dry out before use for higher printing quality. PETG HF must be dried before use and remain moisture-free during the printing process, especially for longer print times (over 6 hours).
Drying conditions: 65℃ for 8 h in the Blast Drying Oven; 75 - 85℃ for 12 h in the X1 Series Heatbed. For more details please refer to: Filament Drying Recommendations on WIKI. Please note that the spool can withstand the higher temperature for drying on the heatbed.