Angled chuck jaws

This is a derivative of Sublime's Three jaw keyless chuck - http://www.thingiverse.com/thing:9179 , these are replacement jaws. From the discussion on that page hexitex may have some better jaws on the way, hopefully this principle can be applied to them too.

I angled the base of the jaws a bit (1 or 2.5 degrees) such that when they are tightened, they will want to lean in towards whatever they are holding a tiny bit, applying more clamping force.