I'm looking for a floam recipe that will dry to a relative sturdy shape. I'm working on a puppet and I want to rough out the dimensions and proportions, and I want something cheap and light-weight. If the quality is high enough, I might just use it for the final build, but for now, I basically want to 'sketch' in three-dimensions.
I've found a number of floam recipes on the web, but they are aimed at kids' entertainment, so they are advertised as basically non-drying when sealed away. I want one that dries, so that I don't deform the shape when I'm done with it.
Can someone offer a floam recipe that dries, and will be sturdy enough to carry around once finished?