I couldn't find my wax paper, so I tried Parchment Paper, which has a silicon coating. I tried two boards. One I let cool after ironing and the paper peeled off leaving all sorts of spots. Second one I peeled off while it was still warm and it seemed to work fine, but when I went to use a marker to touch up and empty edge, I found the toner wasn't really stuck to the board well.
So Parchment Paper is a fail.
I managed to find my wax paper. I've printed off a design. I'm going to clean off the old board and try to iron it on. It goes through the printer without any issues and leaves a clean print on the wax paper.