6 string fretless neck

[bassinflux]

alright, assuming i could hypothetically actually do this I have a couple questions

what kind of ebony do I want, and what are the other choices?
where do i get a big enough slab of wood for a 6 string 34 scale bass?
what radius do i sand the neck to? (how thick would i need it to be to not thin out on the edges) does ebony take sanding very well?

what do you guys think?

[5thString]

Well, black ebony is the best choice, although macassar ebony gives excellent results. Any stabilized wood will also do the job.

Check out Gallery Harwoods (http://www.galleryhardwoods.com)for any of these.

Regarding the radius, I'm using a compound radius, using a 1mm elevation at both ends of the fingerboard, with constant 4mm thick edges.

Ebony sands very well, although being amongst the hardest woods it takes a fair amount of time to get to the result you want.

[bassinflux]

What is the width of a 6 string at the neck and at 24?

isnt there a program for this?

[5thString]

Well, I usually consider the nut width on one end, and the string spacing at bridge. For a 6 stringer I like a 54mm wide neck at nut, and a wide 19mm string spacing at bridge - which would theorically stand for a (5 * 19 + 2 * 5) = 105mm "neck" at bridge, providing the fact that you want a 5mm margin from the center of the each external string to the edge of the board. Most players might want a narrower string spacing at bridge such as 18 down to 16mm though.