My biggest cake so far(14", 12", 10", 8") !! I was so nervous my hands were shaking when I stacked the cakes. I have never used the hidden pillars before . It was easier than I had anticipated, but next time I will cut the pillars down some, I was to nervous to do it today.I am glad it is over with now I can relax!!!(dont know how to change the date on my camera)