This was carved from sheetcake and put on several dowels that had been drilled into a large wood block for support. I did my best on the measurements, but I was definitely off. I made the sides and front/back ahead of time to dry and harden, but they were too small, so I had to improvise and fill in. This was for my nephew's 8th birthday and he was thrilled, though! They are my guinea pigs and I do their cakes for free for practice, so it's ok! I will know better for future cakes!