Over a year ago in this thread I posted a picture of an experimental guitar I've been working on, and promised more photos and information, and after a reminder in another thread, I thought I should finally post something.
The idea was to build a guitar with a really thin top, but with (more or less) traditional fan bracing. At best I was hoping to get a traditional tone with more volume, but at the least I wanted to better understand the influence of top thickness on tone, without changing the bracing. The problem with using standard fan bracing on a very thin top, is that it's difficult to provide enough support against the string tension. There are other issues as well of course, but after some input form an associate with an engineering background, I decided to play around with cancelling the torque of the strings - hence the internal string.
Apart from the changes to the top, the guitar also has an adjustable neck, radiused fingerboard, aluminium pin saddles and a new head shape.
Anyway, I think that's enough words - here's some pictures.
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James Lister, luthier, Sheffield UK