I wanted to make my first mmf topsy turvy Halloween birthday cake for my mom. I had to travel 300 miles with it. It started as a four tier and ended up being three. 30 min into the trip I took the 2 top layers off. They were all ready slipping. The 3rd layer proceeded to break apart in 4 pcs. My top layer was all that wasn't ruined. The backside of the first two layers broke apart. The next morning my mom encouraged me to fix it. I never got a picture of it with all my layers and turrets all done as I was going to add those at my destination. The bottom layer is 16" Thanks for looking.