3D-Printable Endstop switch

MK2 is finally here! http://www.thingiverse.com/thing:389006
This is the world's first (mostly) 3D-Printed mechanical endstop switch (that I know of).
Recently I broke one of the end stop switches on my printer, so I decided instead of buying a new one, why not print one instead? This is my first attempt at making a 3d-printable mechanical end stop switch. I put it on my printer, and so far it has worked for dozens of prints. Head on over to instructions for more information on making it.
I can also add parametric files for those who would like to modify this design.