This is a warning for anyone attempting this: The PEI removal and replacement process is ''extremely labor intensive''. If you haven’t already bought the spare PEI sheets, save yourself the time and trouble and just order a replacement spring steel sheet with double-sided smooth PEI from Prusa.
Two PEI sheets is about $18 USD, while the spring steel sheet is $30 USD. An extra $12 USD will save you 2+ hours of scraping, scrubbing, and wiping.
I would add to this - post your damaged sheet up on facebook or something so that if somebody else is willing to invest the time they can use the otherwise unused spare flex plate
Two PEI sheets is about $18 USD, while the spring steel sheet is $30 USD. An extra $12 USD will save you 2+ hours of scraping, scrubbing, and wiping.