Light version of ElViolin http://www.thingiverse.com/thing:745940
Bridge and string are still from classic violin. As tuning machines was used pegs from guitar. Electronics can be found on ebay by search words "electric violin piezo pickup".
All parts was developed for printing on bed 200x200 mm.
Weight is about 600g.
Neck I printed from PLA with infill 10%.
Black stuff (chin rest, shoulder rest, handle) is ABS. After that I glue soft coating to shoulder rest with acetone.
Shoulder_rest_p2.STL I printed with infill 100% so as it has maximum load.