Anybody making graphite replacement necks w/ fanned frets?

Fanned frets and graphite makes me think Emerald - don't know if they do or would consider doing bolt-on necks, but might be worth asking.

 

Are you trying to convert a conventional bass to multiscale or replace an existing wood neck with an identical one in a different material?

 

These folks are planning a bass later this year, might be worth asking them about a custom neck.

Electric Bass

Another thing you could do is follow Peavey's example and go with a wrap. The G and GV basses had thin wooden necks wrapped by a gun stock company. You could do the same,plenty carbon wrap services out there.

Wouldn't worry too much about the fanned fret part, it's only a board. Fretboard calculator works out the cut lines.

 

If you're looking for custom GV guitars will do a carbon fiber wrapped neck and possibly a full carbon neck. They're very well priced for full custom and do awesome work.

I'm actually in the talks with sankuer guitars right now to make a carbon fiber copy of my new Legator fanned fret neck. They're working out the engineering right now so I don't have a price point or logistics yet. If you have a fanned fret bolt on neck they'll probably do the same if you reach out.