Understand the sentiment.
If made for wood they wouldn't be as beefy or as hard as a metal cutting end mill. Probably good for the softer nonferrous metals though. Heck I think Ironwood or African Blackwood are harder than brass/aluminum anyway. I know they sink in water and can't be stabilized. Desert Ironwood will wear out a bandsaw blade fairly quickly because of the silicate in it. I remember the first time I polished some and with a good magnifying lens you could see the silicate crystals in it. Buffs out really well.
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