Pick and Place Head (PNP for SMT)

This is a simplistic easy to build pick and place (PNP) head for surface mount (SMT) electronics.
I've tested it with my printer using 0805 sized resistors
http://www.youtube.com/watch?v=OV2Zr3X-EQc
I am using github to manage the sourcefiles, instructions and python code to drive it:
http://github.com/celer/picktor/
**The included copy of picktor.scad will not be maintained here but will be maintained in the github repo listed above!**