Got a stand of Black Locust ( up to 10" on the stump) died on the stump ,, 10 years or more past ,,, hard as a woodpeckers lip ,, but makes some fine looking furniture ,, and yes ,, you are going to sharpen more tools ,,chains saw shoots sparks out ,,, like hitting a nail ,,, thickness planer really balks at it ,, turns nice on a lathe ,,just don't drop a bowl ,, they break !!! Just remember what Red Green said, 'If it isn't broke ,,you just ain't trying hard enough"