I bought an Octograb modular/magnetic heated bed for my Mini 2 earlier this year, and have loved how easy it is for me to get prints off the bed. I have used it with PLA, ABS, PCMAX, Nylon/ASA and it has worked great for several months (once I dialed in the Z-offset perfectly).
Now, however - for some reason, NOTHING will stick to this surface anymore. I cleaned it with Acetone, IPA, etc. and have tried several bed adhesives - but for whatever reason, this bed just suddenly became a non-stick surface! Has anyone seen this before? Is there anything I can do to get this surface back to where it was originally, or do I just need to buy a new flexible plate every once in a while?