The one my DH made is 8"long, 2.5" wide on one end, tapering to about 2" on the other, and 1.5 or so " high. The ends are rounded. As someone mentioned earlier, you could basically grab a hunk of wood out of his scrap pileand use it, but you would want it sanded nicely. Think about what size blocks you normally make and adjust the length accordingly. Mine is a little short, so I will have him make another that is about 12" long.