correct answer:
"The application of a hardened wooden edge to a brittle bone will not slice the bone, which means a localised shearing of fibres, it will crack and crush the bone, involving a distribution of impact forces onto the extended shape of the bone, not the local impact point. The...
"Growing in desert conditions leave these [Australian] woods with a hardness and density comparable to desert ironwood.
Gidgee (Acacia cambadgei) – Janka Hardness Scale – 4270
Mulga (Acacia aneura) – Janka Hardness Scale – 3820 (NOTE: I’ve seen many references to this wood being used as a...
New York Times and others have published that wood slices skull-bone.
https://www.nytimes.com/2016/10/18/science/first-boomerang-victim-australia.html
Steel compression fail is 100-350Mpa, wood is 1.2-20 Mpa and skull-bone 170-200Mpa.If wood can be surface fire-hardened so that a sharp edge...
