We were sanding some walnut lumber the other day in the shop, and look what we found. It's a walnut in the walnut. How nutty! It looks like the walnut shell fell into a crotch in the tree and the tree grew around it. I am so glad to run into a foreign object that doesn't ruin the equipment.

I've never seen this before. Usually it's a big chunk of metal.

I've never seen this before. Usually it's a big chunk of metal.