How to Prevent PETG Warping from the Print Bed

Question: How do I stop PETG from warping off the bed?

Answer: To prevent PETG warping, start by ensuring your print bed is clean and free of grease; use isopropyl alcohol to wipe it down. Set the bed temperature between 70-80°C to improve adhesion. Apply a suitable adhesive like a glue stick, PET tape, or specialised 3D printing adhesives to the bed surface. Use a brim or raft in your slicer settings to increase the surface area of the first layer. Print the first layer slower (around 20-25 mm/s) and slightly closer to the bed to improve sticking. Keep the ambient temperature stable and avoid drafts by enclosing your printer or using a draft shield. Finally, make sure your first layer height and extrusion width are calibrated correctly for good bed adhesion. Following these steps will significantly reduce warping of PETG prints.