I like to call it "carboniferous foam" It makes it appear like you are working with something exotic. And actually, when you compare it to other materials, ca

I like to call it "carboniferous foam" It makes it appear like you are working with something exotic. And actually, when you compare it to other materials, carboniferous foam is pretty amazing stuff, it's combination of highly workable, low density, high strength, is tricky to replicate in more engineered stuff.