Where can I find a thick, high-density foam?

Question

I need a flexible, firm, high-density foam (a la couch cushions) for a prosthetic I'm making. So far, all I can find costs well into the $200s. Where can I find this type of foam for less money?

Answer 1

depends on how much you need how expensive it's going to be, but I've seen foam for e.g. a seat cushion at fabric stores, I definitely remember seeing some at JoAnn fabrics. I think a whole mattress worth of foam is still well over a $100, but I would assume you'd need much less and they sell it in smaller pieces and different thicknesses. Though not sure whether it is dense enough for your purposes.