Parametric bar clamp

This is a library I made for a my CNC project under development.
It's fully parametric.
For the meaning of the module's variables use these image
http://www.cnc-store.it/userfiles/image/LINEARE%20NBS_extract_1_Page_1.jpeg
http://www.cnc-store.it/userfiles/image/dim_%20shf.png
Hope you'll find useful.

2014-10-14 Update: A new clamp put inside. L stile clamp