Alex over at TwelvePro.com has made a batch of MP3DP parts, with my permission. I bought a set of acrylic parts and gave them a try. I like them, much better than My MDF build, and HDPE builds. Took forever to clean up my wires, twice as long as the actual build. The odd sized rods are from me salvaging them from an old crappy printer.
Have a look, http://twelvepro.com/index.php?route=product/category&path=59_68.