Weird, I just had my 486mp tape give out on part of my bed and my PEI bowed up and ruined a very large print.
I got the PEI off easy this time by just pulling on it but it took a long time, bunch of chemicals, half a roll of paper towels and a sharp chisel to get the glue off the glass. It seems like nothing really dissolves this stuff. I tried IPA (as I hear people mention) it did not even touch it, like trying to clean off tar with water) and then I use acetone (works but very slow going, very messy and still does not seem effective on some of it), then tried orange oil (like goo gone) but was less effective than acetone and finally WD40 (hey it works on stickers) but it too did not do a lot and I went back to acetone.
Anything that really removes the sticky goo that is 3M 468mp easily? And any idea why it just randomly gave out after 4 months of use?