When I first started turning, I picked up a load of oak and rough turned bowls. when green they where easy to turn, but after a couple years I took one off the shelve to finish yesterday. What a pain. That stuff is like iron. I had to use three pieces of 80 grit just to get one very mild radial scratch out. I was going to give a couple of the dried rough bowls to my nephew to finish (new turner) but I wouldn't with those things on anyone. Done with rant for the day.