I am probably going to go the bar top epoxy resin route. I would be worried glass could shatter if the tray is dropped and then you would have a worse problem then a burn mark. This was just something I threw together on a whim so more of a learn as you go type experience.Have you considered putting a piece of 1/4 inch glass to protect the bottom from getting burned? Looks damn good, it would be hell to get it burned up.