If you trace the disc on black construction paper, cut the outside edge carefully with a scissors and for the middle circle, a #9, 15mm gouge makes a perfect sized punch when used against a block of wood. I have a 9/13 Pheil gouge, a little small but good enough. If you have different radius small gouges, you could follow the inner circle tracing against a wood block and just "rock" your gouge (as in Kibler's tutorials) along the inner outline. Then take the disc, glue it to white copy paper and make copies!