do any luthiers use wood as the nut material on fretless basses? - the reasoning being balancing the open string/ stopped note tones. I've seen Vigier and Status using a "zero fretless" approach using a zero fret idea, but using an inlaid fretline as the zero fret where the open string contacts the fingerboard. also wood is often used as a bridge saddle material eg. Leduc. I've just replaced the standard plastic nut on my Yamaha RBX270F with one I made from a tree branch (apple or peach- it's from the garden, and well dried-out- like maple, possibly a bit softer). so far it's working well- the open strings sound a bit mellower than before, sustain seems the same (also I spaced the strings out a bit to cover the fingerboard better).