I must admit that this is an unusual build for me. I literally do not know what I am doing ... insofar as I have to keep returning to parts to refine and refine them. That is what is so time consuming. I don't always score high on being sensible, but I do on perseverance and being bloody minded!
Today was not a work day, and I ear-marked completing the seats. The upper side was 99% done, but the underside needed fine-tuning. I have two photos to guide the shaping ...
That one (above) is from the factory building the prototype. They screwed the legs to the seat, rather than use integrated tenons. This proved to be a great model in my case.
The second photo is a production chair seat taken from the underside. In particular, this shows the treatment of the smoothing of the tenons and their integration with the back ...
Lastly, I keep returning to this photo of the chair, which shows how thin the seat looks from the side. Keeping in mind that the seats started out at 50mm, and were 40mm after the plan was cut out, a great deal of tapering was necessary to achieve this look ...
Here are the two completed seats. The seat on the left is face up, and the seat on the right is bottom up ...
Regards from Perth
Derek