This was done for a friend. Made of proofgrade walnut and maple hardwood. Took 2 pieces of maple, just 1 of walnut cause I could stack the slightly smaller pieces vertically. Took some trial and error to hone in the right amount of wiggle room for the pieces. It didn’t help that they can vary in size quite a bit. I only had the one set of pieces to go off of so I’m hoping some of the others aren’t too much bigger. I originally had the slots spread out a little more at 1/4" (they’re 1/8" here) but tightened them up to save on material. I didn’t sand down the finish before gluing as I’ve heard you’re supposed to, so hopefully they don’t fall apart on her .
The pattern is available to purchase here: http://laseredby.me/shop/settlers-of-catan-pieces-holder