I am making a pipe for a ductile iron pipe company. I am planning on doing 12" square . Two side by side making it 24" long.. Then taking 8" round cakes and stacked on its side to look like a pipe.

What do you as a cake board for big cakes?
How do I stack the round cakes on its side?
DO I put a dowel through the round cakes?
How do I stop the round cakes from rolling? (the pipe)
I am covering the bottom cake as well as the pipe in fondant.

How many cake mixes does it take to fill a 12" square cake pan?
I make my cakes from scratch. Usually the cake recipe says it fill 3 8" or 2 9" round cake pans.

Thanks for any info. Hope I explained my idea.

I have never done anything this huge before. I think I am thinking big for my field of experience from watching the first and second seasons of cake boss! Man, what awesome cakes!

Letisha

Honestly I do not think stacking 8" cakes sideways will be your best bet...it won't be as sturdy, and very hard to slice. Its going to want to crack and collapse.

You should stack sheet cakes and then use a round template and carve them in the shape of the pipe.... that way, too, you could even just put all the servings into the pipe if you wanted to....

Use a thick (1/2") sheet of foamcore for your base board.