I made this for a friend's son and what a disaster. The golf ball is RKT covered in buttercream. I didn't think it was very heavy and didn't use any dowels to support it. The next morning the bottom layer had a huge crack and was hanging off the cakeboard. I had to redo the entire cake the following day and I made sure to use dowels this time. I will make sure to always use dowels in the future no matter what!