A couple of weeks ago, I cut a piece out of the trunk of a Red Oak that fell during Hurricane Matthew. I am in the process of cutting and rough turning the Red Oak. A nice size burl was on the side of the trunk. I cut it out the other day and started to rough it out. Once I cut into the wood, I discovered a rather large cavity inside of the burl. So, this afternoon I went ahead and finished it. I tried to get the walls as thin as possible to keep the bowl from cracking or warping too bad…time will tell.