Has anyone tried building an Archguitar or know if plans are available somewhere?
For those of you who may not be familiar with this instrument check out archguitar.com. It is the website of the virtuoso player Peter Blanchette. I've had the good fortune to see Peter play in person several times and have a number of his outstanding CDs. The sound that comes out of this instrument is very large and due to the high number of strings it has an incredible octave range, making it possible to play with voicings that would not be possible on a conventional guitar.
It might be an interesting project to build one at some point, although it appears to be structurally more like a lute than a guitar.
Apparently, Peter's instruments are built by luthier Walter Stanul (http://www.archguitar.com/walter.html).