One of the two steel trebuchets we are using to investigate the behaviour  of all four basic treb types has been built and is in use, the other is near completion.  We should then have available a fixed counterweight machine, a swing bucket machine, an FAT (Floating Arm Treb), and an F2K treb.  This is the last semester of an honors research project for two students.  If your'e interested in any of this sort of thing please see me or Matt Hamilton or Ezra Cole.