Warning: This is not a step stool.
I don't get out of the floor as easily as I used to. I wanted a low seat for when I am working in or close to the floor. When I designed this seat I was looking for strength and not fancy. It is just a shop seat.
The stool is 15" tall. The seat is 12" in diameter. It was cut on the scroll saw from 3/4" plywood. There are no hardware fasteners. Only glue.
The pieces are large but they can be cut on a 21" scroll saw with no problem. A 16" saw is going to be a little more tricky but I think it can be done. I did not test it on a 16" saw.
I did use a router to round over the top of the seat. That just adds a little comfort.
Each part is larger than a sheet of paper so the pattern is broken up over multiple pages. You will need to tape the pattern together to get the full pattern.