In the old days before creosote, post oak was used for railroad ties because of its rot resistance. Also for fence post. We have a 100+ year old barn made from post oak logs. It's great BBQ wood though. IMO, the best. That's where a lot of wood I use comes from. It all gets eyeballed before heading to the firebox.
Not great furniture wood though. It has a real tendency to check and twist.
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