CalcBot Pen Holder

This is a pen holder designed for a Norland Research Calculator Controlled Robot: http://www.smallrobot.com/

It is sized to work with a standard full-size Crayola marker ~14.5mm diameter. There is a bridge between the clamp and the base which acts as a spring hinge to keep pen pressure consistent across bumps and dips.

~15 min print on MakerBot #322