Originally Posted by citruscountyquilter

I would make the outer fans shorter. In other words for the outer most round you would have a very big hole, the next round would cover up that hole but still have a rather large hole but smaller than the first round and so on. That way you wouldn't have the bulk in the middle that you would if you just layer one dresden on top of another.
You need to adjust the length of the blades and the width of the blades as you make each round.