Here's yet another knife rebuild.
When these old casein knife handles get too cracked and warped from our abuse and lack of care, I'll break off the old handle and give it a new one, usually wood, and I'll generally regrind the shape of the blade and sharpen it too.
I don't know for sure what timber this knife handle is, but it works easily and takes a nice polish. It looks like some kind of tropical hardwood.