I cannot help you with that one, Angel. I make mine out of cardboard packaging boxes that I get from the grocery store…..cut the number of pieces necessary to give me the thickness I want, glue them together with hot glue and tape the edges to be sure they are tight, cover with two layers of heavy duty aluminum foil, then cover with fondant and trim the edges with ribbon. If I did a lot of cakes, I know this would not work, but with the limited number that I do, it works very well and I can get the exact size and shape that I want.
Sugar Sugar by SSmiley