Warping and first layer not sticking: how to fix

Lifted corners or a first layer that peels off depend on the plate, temperature and drafts.

Plate

• Wash with water and dish soap, then isopropyl alcohol
• Don’t touch the plate with your fingers
• Use glue stick on PETG and smooth plates as a release layer or aid

Temperature and speed

• Raise the bed 5 °C if corners lift
• Slow first layer: 30 mm/s
• Fan off for the first 3 layers

Helpers

• 5–8 mm brim on large parts and on ABS/ASA
• Closed chamber for ABS, ASA, PC and nylon
• Avoid drafts and open windows near the printer

Nozzle-to-plate distance

Run auto bed levelling and, if needed, adjust Z offset: a first layer too high won’t stick, too low gets squashed.