Does this substance exist? Arts & crafts people or hardware store people: for a craft project, I want a material that is malleable like clay but winds up lighter-weight like styrofoam/polystyrene once it has set and hardened. Maybe it it's dispensed from a tube or can?
I want to make some creative and whimsical frames for some irregularly sized/shaped art, which is too fun for regular frames. I'm looking for a material that is malleable like clay that I can form into fun shapes, which then dries and hardens and is lightweight like something approaching styrofoam, or at least a lot lighter than clay.
Have you ever seen somebody make a frame out of clay spirals? They roll the clay into long thin tubes or strips and then roll those up in to sweetroll spirals. Then they glue those spirals to a backing and/or to each other so that a border of those spirals squished tightly side by side goes all the way around whatever they're framing. Often they paint them and glue on other stuff.
I want to do that, but I don't want something as heavy as clay. I want something that is maybe sprayed out of a can or probably something thicker that is squeezed out of a tube like toothpaste or like caulk from a caulk gun. I want to aim and twist and prod and shape that stuff into various shapes and designs, the spirals are one example, maybe with some wavy tentacles to go along with them, and then leave it to set or dry. At the end of it I want something that is rigid and lightweight and holds its shape. Ideally the finished product would be lightweight like styrofoam and have a smooth surface that accepts paint nicely. A bit heavier than styrofoam is fine, particularly if it's stronger than styrofoam.
I understand that thanks to silly old physics, I may have to give up one or more of those qualities to get the others, but just shoot for the closest thing you can think of. It doesn't have to squirt out of a can or tube, that's just how I was thinking I might get a material that's lightweight.
I've found Versi-Foam
, but it's more like spray insulation and requires a framework and special equipment and then sculpting and sanding. I'm looking more for something that can be dispensed in a more limited and controlled way that will stay in its toothpaste-like tube shape if I do nothing else to it. It's hard to imagine, but if it could be not so sticky like caulk, that would allow me to do other things with it than leave it in the tube shape. Basically I want something with the malleable properties of clay that winds up very lightweight.
Arts and crafts people in the house, or even hardware store materials people, what substance am I looking for?