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: If you Liked my original capo, Like this one even more! Update: I've added versions that don't need the rubber o-ring piece (use the *_no_oring.stl versions of the files), although the versions with the o-rings work more reliably.Update: I've added a wide version (icapo_wide.stl) which works better for fatter-necked acoustic guitars. Use the standard version (icapo.stl) for electric or thinner-necked acoustic guitars Follow these instructions exactly for the best results: Material: PLA Layer thickness: 0.2mm No. shells/perimeters: 5 Perimeter line thickness: 0.45mm (exactly) Infill (rectilinear): 35% This prints with a build-in channel for an o-ring bumper. The channel has a thin, integral support which peels away easily after printing. You will also need a ~2" length of 3/16" thick o-ring that can either be cut from standard o-ring (http://www.amazon.com/O-Ring-330-BN65-Nitrile-Pack/dp/B000RAI6K4) or can be cut from o-ring cord. Cut a section of o-ring 2.05" long and press into the channel on the presser bar. It's also a good idea to put a small piece of electrical tape or felt on the bottom side of the clamp to protect your guitar neck.