3D Prints Warping
Prevent corners and edges lifting from the build plate during printing.
Warping happens when printed plastic cools and contracts. If the upper layers shrink while the bottom of the print is attached to the bed, the resulting force can pull corners upwards.
Start by making sure the first layer is sticking properly. Clean the build plate and check your Z-offset.
Make sure the bed is reaching the recommended temperature for your filament. PLA usually requires relatively modest bed heating, while PETG, ABS and ASA generally require higher temperatures.
Avoid cold air blowing across the printer. Open windows, fans and air conditioning can cause one part of the model to cool faster than another.
For difficult prints, add a brim in your slicer. A brim increases the surface area attached to the build plate and is particularly useful for models with sharp corners.
An enclosure can dramatically improve results with ABS and ASA because it keeps the surrounding air warm and reduces thermal contraction.
Avoid excessive part cooling when printing materials that are prone to warping.
Large, flat models are particularly vulnerable. If possible, consider changing the orientation or dividing a very large part into smaller pieces.
Common causes: poor adhesion, draughts, incorrect bed temperature, excessive cooling, large flat geometry.