PETG filaments may have adhesion issues with the printing platform during the printing process. Due to the strong adhesion of PETG, the filament may stick firmly to the printing platform, making it difficult to remove the print from the platform. Solutions include using an appropriate build base (e.g. tape, glue) before printing, adjusting the build bed temperature, and using a dedicated build build surface.

PETG filaments often require higher extrusion temperatures to ensure flow and reliable printing results. Make sure the extrusion temperature set on your printer matches the recommended temperature for your PETG filament, and be careful to adjust the temperature settings based on print speed and ambient temperature to avoid extrusion issues or clogging.

PETG filament has a high thermal shrinkage rate, so shrinkage and warping issues may occur when printing large parts. To reduce these problems, use a heated bed and ensure a stable temperature in the print chamber. In addition, warping problems can also be reduced by using smaller layer heights and appropriate fill rates.

Due to the strong adhesion of PETG filaments, additional support structures may be required during the printing process to support suspended parts or large over-the-h structures. This helps reduce distortion and improve print quality. Make sure to set up the support structure correctly and perform proper cleaning and trimming after printing.

PETG filaments are sensitive to moisture, and moisture absorption may result in reduced print quality. It is recommended to store unused PETG filaments in airtight containers and avoid exposure to high humidity. If the filament has absorbed moisture, you can put it in the oven to heat for a period of time before printing to remove the moisture.