Microwave oven plate rotation fix

This piece is to be glued on the bottom of a glass microwave oven plate that doesn't have the little knobs to rotate the plate
(remember, a microwave oven that doesn't rotate isn't a real microwave oven, as once said Thorin Oakenshield)
This is in case you found a compatible plate (pawn shop or else) that doesn't have the knobs underneath. You can glue this on the underside. Use microwave-safe epoxy, not CA glue/super glue.
Edit : One of these was installed in my microwave oven and melted aft