Please make sure that the product has two parts. The blue part is the surface, another part back with 3m adhesive which should stick on the hot bed. Or you should adjust the 90 degrees direction if there is a weak magnetic
The sheet adheres to a print bed to help the filament stick during printing warping
The sheet adheres to a print bed or heatbed to help the filament stick during printing and easy to clean and remove the printed part
Compatible with PLA/ABS/PETG filament, allow to print surface without additional adhesives or tape
We advice the temperature of the hot bed should not exceed 80?