Collette Peters uses styrofoam wedges for her topsy turvy cakes. Where can I buy these? I really like not having to cut away half a cake to achieve this effect.
Have you tried a cake store (that's assuming you have any close to you)?
Or how about making your own?
The best thing might be to cut a round styrofoam in half diagonally. According to people who have done this, a little tip is to try to make sure the thinner end of the wedge is no smaller than an inch thick. Hope this helps.
Yes, I'd just cut a round dummy diagonally.
Lenny Lee from The Cake Dummy Place makes them too. He does all sorts of custom dummies. You just call him up, let him know what you need and he ships it out. 860-875-1736 (No website)