custom build 8 string fretboard

[TekknoWaffle]

Hello. I am wondering where I can purchase an ebony fretboard, suitable for an 8 string guitar with a 28" scale. 

[curtisa]

Maybe look for 5 string bass-sized fret boards? Width is pretty much the same at the 24th fret, and more than enough length to cover your needs.

The bigger problem will be locating a piece large enough to suit your needs in Australia. Ebony is listed in CITES under Appendix 2, which makes it a controlled import/export across borders. It's not impossible to buy from overseas, but most suppliers will simply not want to bother mailing you one piece of ebony because of the extra time and expense of doing the requisite paperwork. Same now applies to rosewood, unfortunately.

There are several local species that work more than adequately as a fret board. If jet black and zero-grain is an aesthetic requirement, you could even japan-black/ebonise a piece of plain maple.