Hava a good news!
We will publish spring steel PEI sheet on July,2018.
Flexible magnetic PEI Sheet Spring sheet cut for Prusa Mk3 or Mk2.5 and any 3d printer.
However,We have solved a problem with spring steel magnetic PEI sheet to removable and flexible.
Contact: Mozart Jiang
Add: Room 8103, Jinmaoyuan Building, Jinniu Western Road, Pingshan District, Shenzhen, China 518118