that looks great and very well constructed, beautiful, and unique!!!... are you going to clear-coat it? or leave it 'in the raw' to patina? also...
...i used to to have copper acoustic and bass strings, they would sound fantastic (when fresh/new-very loud, clear and 'piano-like'), but had an issue with them causing my fingertips to blacken where they came in contact, and both the string and hands started smelling like you've been holding a handful or two of pennies in your hand throughout the summer... that wouldn't wash out/off immediately... so... two roundabout questions, does this have any issues like that? and second, did you make it for personal use, or are you planning on offering them up for sale?
take care, happy carving....
eric