Yes, inexpensive urethane dress forms, carved to fit, then cut and assembled in the four-part system. Ethafoam, in addition to adhering from the heat also has a lot of "tooth" and makes it difficult to remove. Jamie, I think the adjustable dressmaker's form would also be problematic, as the Fosshape would shrink into every nook and cranny. Then again, those ribs could add strength to the shape...may be worth an experiment!

Jim