I'm a non-luthier looking for a DIY solution to an intonation problem with an older Godin Multiac nylon-string guitar.
As I understand it, some older models are known to have problems with bridge and/or slot placement.
The guitar's too sharp at the 12th fret on all strings, even with lower-tension strings than the recommended ones. I haven't been able to set the breakpoint on a normal 1/8" saddle far enough back, or the action low enough for my playing style, to compensate.
I know the "right" thing to do would be to take it in to have the slot filled and re-cut. But I'm poor as a churchmouse at the moment.
I have a hare-brained idea of fashioning a saddle with a "backset," as shown in the attached picture. That would allow me to set the breakpoint further back than the back edge of the slot.
Has anyone ever done this? I realize that it will make the break angle more acute, as well as increasing the mass of the saddle and maybe even the pressure against the bridge in front of the slot. But is it a totally mad idea?