How to Disassemble my microwave door?
Try using 2 putty knives, about 1 inch wide. Choose the flexible style that have nice thin ends. Start on one of the short sides close to a corner, with the 2 knife ends side-by-side. Alternate the 2 knives like a step exerciser, prying to lift the plate away from the sticky strip. Work both sides of the corner, but mostly along the short side toward the other corner. Increase the height until you can lift it slowly like a book cover.
Re-assemble with 2-sided tape of high-temp RTV caulking.