How many turners try to keep the weight of their ornaments down so the ornament can actually be hung on a tree. I have seen some awfully large ornaments that I am sure would break a bough.
Could you use hot melt and pop it in the microwave and pull the dowel out before hollowing?use a dowel glued to the inside to create the spacing while the epoxy cures. I just use some CA on the dowel. Occasionally the dowel will break loose