That turned out beautifully Dennis. Now that I'm looking at it I see another very simple clamping solution for future reference. Tape sections together like you did and once you get it all together and with the cone inverted all you have to do is drop two hoops or circles over it. One larger one for near the bottom and a smaller one for the top. Just like in making a barrel. As pointed out before, you don't need a lot of clamping pressure, you just need to hold it together till the glue sets.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.