@aw1 Borosilicate Glass plate please. Be safe. You can find them easily on eBay, Amazon, AliExpress, etc.
As far as glues, I have tested a LOT of different kinds, and found that really, just the cheap PVP glue stick works best. Sometimes I'll use my pump spray bottle with just water and wood glue (which is PVP), that takes a bit longer to dry.
My mag plate is still in good shape, I've been switching back and forth between that and glass depending on what kind of finish I want.
@pfeerick, I have never had to wait an hour, usually 15-20 minutes maximum and pieces just fall right off. Sometimes I forget and let it go 30 minutes because the beer is in the refrigerator right below the freezer