My pal Angus Hines cut these interlocking wooden puzzle pieces from finish-grade oak plywood using his ShopBot, and installed them in a hallway of his Carrollton, Virginia home. The finish is Varathane high traffic polyurethane. There are more pictures in this Flickr set. If you’re interested in the idea, feel free to contact Angus directly. I’m sure he’d be glad to cut you some puzzle flooring or other custom parquetry at his usual bargain prices. [Thanks, Angus!]