Or vibrate the whole rig with an eccentric weight on the motor to break the stiction. A flexible sheet (if linear over this range of load) might work better than a hinge. On Sun, May 26, 2013 at 3:11 PM, Peter wrote: > Use a flexure suspension to replace the knife edge. > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .