Originally Posted by Crossstitcher

You could place a piece of lexan plastic on the top of the table before the pad and it would take the heat + the moisture. It would need to be 1/4" thick and you can get it at a glass shop. They use it for race car windshields so it's pretty tough stuff. I use a piece to put on top of a sewing cabinet when I want to use a portable machine and not scratch the finish of the cabinet. Works great.