my dad and nephew are taking down a tree at the nephew's new house. at first they thought it was olive, or russian olive. i told them both to save the larger diameter trunk, and branch parts. after looking at the wood, i was pretty sure they were wrong, and brought home a leaf from the tree to identify the species. it turns out to be an aspen tree. the wood is very hard, and cannot be marked with a thumbnail. i am wondering if any of you, flat or spinny, have ever used this wood.