On Tuesday 21 December 2004 11:41 am, Michal Seta wrote: > tim hall <tech@xxxxxxxxxxxxxxxxxxxxxxx> writes: > > Yes, I came across a Viola da Gamba designed to play Persian scales. > > Moveable gut frets. Possibly a little simpler than you had in mind. > > Gambas have moveable gut frets by default. I almost thought of using > a similar technique for the guitar. The problem is that the fretboard > is too flat for this to make sense. On an electric guitar it's almost > feasible but the frets should be made with some other material than > gut. My guess is that the gut will get easily damaged or cut under > steel strings. > > ./MiS What if, instead of a wire we use a hoop, as on a barrel? This'd go around the fingerboard so the mechanicals to lock it down would be inside the neck. Or even a cable going through a tube, which would act like a bearing when it's time to reposition.