Fish or Fowl? Based on M C Escher's work

Two shapes, a fish and a bird, tessellates to cover a surface of any size. A simplified adaption of M C Escher's hand drawn work, made to work as a laser cut puzzle. If you cut enough of them, you can cover your floor. Defocuse the laser by 5-10 mm and etch the "etch" layer as vectors to get nice, thick lines before refocusing and cutting.