More stylish!  More functional!  More printable!  This is an improved version of my earlier guitar capo (http://www.thingiverse.com/thing:698317) that includes a number of improvements:  
Rubber in the presser bar frets the strings with no buzzing and with less force.  (I've also included a version that does not require the rubber piece.)
Re-contoured spring section distributes the strain more evenly to prevent breaking.  
More predictable slicing with specific slicing parameters.  
Positive stop at the handle prevents accidental breakage.  
I've added a wide version better for fatter-necked acoustic guitars  
If you Liked my original capo, Like this one even more!