This is a photoscan of a set of original Yater blocks. The two blocks fit together so the cone pattern continues from one block to the other. The scans are full size so they will need to be re-sized to fit most printers.

We talked about this and lots more cool stuff on the 3D Printing Today podcast available on iTunes, or Stitcher radio learn more at http://www.threedprintingtoday.com/