Pinch block y-bar clamp

This part has been replaced by version 2.0: http://www.thingiverse.com/thing:3843

This is a parametric one-piece y-bar clamp. It replaces two y-bar clamp pieces from Mendel or Mini Mendel, and requires no screws! This is part of a larger project to overhaul the entire Mendel / Mini Mendel Huxley design to make the printable parts print faster and the non-printable parts easier to obtain.