When used in a 3D printing application, PEI is excellent because it can withstand the numerous heat cycles that a 3D print bed goes through from print to print. PEI Magnetic Build Plate is compatible with PLA, PETG?PEEK?ABS and other most filaments. It is Flexible, removable, and will stick to magnetics very well. With the PEI Magnetic Build Plate your prints will be easy to remove, just flex slightly to pop your print right off.