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—use isopropyl alcohol to remove oils and dust. Set the bed temperature between 70-80°C for good adhesion. Apply a thin layer of glue stick or use a PEI sheet to improve stickiness. Level the bed carefully and set the nozzle height so the first layer is slightly squished onto the bed. Print the first layer slowly (around 20-25 mm/s) to help it stick well. Avoid drafts by enclosing your printer or printing in a stable environment. If your printer has a heated enclosure, keep it around 40-50°C to reduce warping. Lastly, consider printing a brim or raft to increase bed adhesion area, especially for larger parts. These steps combined will significantly reduce PETG warping issues.