Zebrawood looks great and very hard but one of the most flammable of woods. The only worse was "mahogany"but that is so many species and most are fine. In either case it is less a flame than a coal that does not burn out but eventually starts eating your work and your choice is stopping, and losing the piece or try to finish before the coal destroys the piece anyway. In either case you need to watch like a hawk.
I have linked this that I use, that uses a minimum amount of material and is good ballpark figuring. And bonus it is small enough that I keep them in a box for reference.