Drying floam for sculpting 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?
According to this link, adding more borax, starch or talcum powder will make the slime more rigid.  Also kneading the slime repeatedly with dry hands will extract moisture, further adding to the slime's ability to maintain its shape while air drying.