Step by step woodyworking

My kind of cutting board

Lots of us make cutting boards, but why not do something unique? Carl Letts sent me this photo of one he made. I first saw this optical illusion at the Exploratorium in San Francisco. The bathroom walls are tiled like this. Its the craziest thing: all the rows of squares are perfectly straight! Hold up a ruler if you want. Or, if you look at it from an edge, it all straightens out. I guess since they are offset a bit, our eyes go buggy and cant really make sense of it. Too cool. Thanks Carl!