Mini Kossel zprobe tool
Depending on your bed geometry and build dimensions, it might be difficult to deploy and retract your automatic bed leveling zprobe using fixed points on your printer.
This part is a small tool that can be mounted on your frame and used during deployment and retraction of your probe. If you're building an automatic bed leveler following Johann's design, also take a look at the clamp that I designed here: http://www.thingiverse.com/thing:117981
Watch it in action here:
http://www.youtube.com/watch?v=IJor2vb2o-w