Join Date: Sep 2005
Location: Sydney Australia
Re: Crack in a Ebony Fretboard
I'd say it's a fault in the Ebony, just looking at it - that sort of crack just wouldn't be possible through the Maple of the neck without lterally destroying the instrument in the process. Ebony is subject to cracking and splintering - it is a very brittle, hard wood - the most likely standard cure via a luthier would be to run thinned superglue in to the crack to stabilise it, then fill the crack with a paste of glue and Ebony powder, sand and smooth the surface when it dries.
It probably makes no difference to the playability of the guitar, and you could easily get it remedied when you eventually get the instrument refretted
Stewert Macdonald sells all sorts of amazing varieties of superglu to help you with this process by the way.