We do a 12 in, 16 in, 18 in, and 20 in (for slices). We use a 16in board for the 12 and 16 in, an 18 inch for the 18, and a 20 in for the slice pie. I like the board being the actual size of the pizza so I don’t have to guess or look at a faded line. You should get the hang out getting it off...