This is a must-have upgrade for Ender3 DIY 3D Printer. This is a Flexible Removeable Magnetic Pad. You will love it!
It is divided into two parts: A (upper) + B (bottom):
Part A: The top is a matte surface, and the back is magnetic (the interaction with the front of Part B plays an attractive role).
Part B: The top is magnetic (with the adsorption under the A part), the back is the adhesive (posted on the printer platform, which plays a fixed role).
Here is an example of how to upgrade Flexible Removeable 3D Magnetic Pad on 3D Printer by Maker Steve:
Instructions:
Simply stick the bottom plate onto your build plate and start printing after bed leveling.
Peel up the top plate with finished prints
Then peel off the top plate from the prints
Take the top plate back into place for the next round of printing.