I saw Larry Copas three leg stool, nice BTW, right as I was starting to weave the seat of a four legger. Inspired by a chair I saw once with this same derrière shaped seat. Except I used woven Danish Cord which provides a touch of cushion for said derrière. I've done several cord seat chairs pre Lathe (spindel legs). White Oak, Danish Cord and lots of little nails. Finished with linseed oil and beeswax.