be circa 4' tall. Shelves will be approx. 10" wide and 13" deep. Shelves are to be thin Masonite (1/8" ?) sliding shelves [in slots]
pattern with a router.
Router bits have one or two edges, get hot, and don't clear the chips quickly. A saw blade with forty carbide edges clears the chips quickly and cools well.
So I'd recommend against routing, use a sled and table saw instead. The 'jig' is just a 1/8" diameter dowel or nail stub in a hole in the miter fence.