I am doing my first big custom cribbage board order. I am making 160 live edge boards. I usually do a router out straight peg storage area on the back. I make one pass at one depth , then drop it and make it smaller. My issue is with the live edge, all the boards are different widths. I want to make sure they are all the exact same so that I can laser cut an acrylic cover for the back, as this is what the customer wants. I have not done any routering other than on my table. how do i make the exact same size storage area on this many boards that are different widths?