Originally posted by Mares
I believe I read somewhere that hardwoods are not considered good for training. Admitedly they are stronger and more resilient, but don't they have a tendency to be brittle rather than ductile therefore when they break they pratically shatter and splinter, rather than just spliting. I also understand that the hardwoods are bad for those using japanese white oak as they tend to cause more damage. So your nice hardwood weapon is ok but you can dent and damage your partners weapons.
Here's an article on different characteristics for wood when used for weapons that's pretty comprehensive (right here on AikiWeb!):