This OpenScad module allows you to generate models for arbitrary Burr puzzle pieces.The bit pattern used for configuration is identical with the one on the following site: http://www.research.ibm.com/BurrPuzzles/index.htmlYou can use the Burr calculator on this site to calculate and print your own puzzles.Additionally, the file contains the burrx() module which allows the corner blocks on the lower level to be set. It basically extends the pattern to 4*L bits.Public domain, because sharing is caring. Feel free to flattr this if you like the infinite possibilities.The STL file is an example level 6 burr puzzle, which you can also find at http://www.thingiverse.com/thing:7446