This may or may not work, but I thought of something just now.. A family friend is always making flower arrangements and she uses some sort of florist's foam that you can press your finger into and it stays. seems like body weight sitting on it would leave quite an indention. It might be too stiff though, or possibly too easily crushed.. just a thought if you know anyone who does this, try a small piece out.

Eric

: It would be more expensive way, but you could always just carve a minicell
: seat like we normally do then cut it into sections to get the shape for
: the wood seat.

: You "might" be able to do this method with building insulation, but
: it's not as easy to carve as minicell is. Would be considerably cheaper
: though and it would already be in sections, lamiminate (without glue) 1
: 1/2" or 2" styrofoam pieces into a seat blank. I'd just build a
: temporary wood box to contain the foam so you could carve it. Don't know
: if you'd crush the material sitting on it or not, but think it'd be ok.
: You have to sit on it to see if it's comfy.

: Bill H.