Question about gluing planks to plywood for countertop.
I am planning on making myself some face grain walnut counter tops. I have some thick slabs, but not enough for all the tops. I was thinking about adding some plywood under some 5/4 slabs to bulk them up. Figure I might have to glue a piece on the front to hide the plywood. What would be the best way to attach the slab to the plywood? A experienced woodworker told me to just glue it, but with expansion it seems like that would split the counter at some point. I figure slotted holes like securing a table top or something might be a better approach. Any thoughts?