Various open scad files for different things.
Most of these will also be found on thingiverse. http://www.thingiverse.com/creuzerm/designs
Files for using a CMM (Cordinate Measuring Machine) to calibrate the kinematics of a RepRap.
A companion Spreadsheet that leverages the files can be found at https://docs.google.com/spreadsheet/ccc?key=0Asb6Jfk9hsyhdHVHcmZvMFFjYUI0WHFuZVdjbXZZX2c&usp=sharing