What do you do if you need a seat in a hurry, are not prepared to pay the exhorbitant price of thick slabs of medium density foam, don't have an angle grinder and can't find where you out the disk sander that you usually use to shape laminated layers of foam?

One solution, I believe is to build the seat upside down so that it looks like this. The longer you sit in it, the more it looks like a normal carved minicell seat.

After sitting in it for two hours yesterday, I only felt the need for one small modification. It was very comfortable and I believe it looks reasonably neat.

The next post will show the underside