Summary Same as http://www.thingiverse.com/thing:232602 but with a few added parts Instructions Print all the part from this thing http://www.thingiverse.com/thing:232602 The bridge is pretty small. I printed it at .1mm solid. The strings I also printed at .1 so they were two layers thick. Nothing special needed for the stem. I used slower setting CA glue to glue everything together. I put a lot of glue on the bridge for the strings to attach. Survived all 4 runs.