I have ended up with an enclosed form (it was sort of unintentional, but I like the looks - sort of like a fat inner tube) and the problem is as a newbie, I have never attempted that type of hollowing before! I am having trouble getting under the rim and making the inside curve follow the outside curve. I can't seem to make a gouge work on that radius. I have a virgin Sorby Hollowmaster, so I decided to break it out and try it after watching the video on Woodcraft's site. No luck...as soon as the tip comes into even slight contact with the wood, it digs in. What am I doing wrong? I have the tool rest set at center, the straight flat of the tool on the rest and am trying to take the most delicate of cuts! They make it look so easy in the video.