Kcs clamp

This clamp has no special purpose. It's the first part of a reading lamp that I'm designing.

My design goals are:
- no vitamins (i.e. completely printable except electrics/electronics)
- easy printing (avoiding excessive overhangs, etc.)
- easy assembly

Update: added the sketchup file

Update 2013-04-30: Added stronger spring.

Update 2013-05-15: Added teeth in http://www.thingiverse.com/thing:89457