Denbobp,
I laminated 1/2" foam from ACS with a layer of glass on each side. Used the profile of my car seats to cut ribs for seat base and back rest. Very easy to customize seat height, thigh support and lumbar. Gets the weight of your tail bone !
These ribs are then covered with 1/2" foam to form the seat pan and backrest. Cover with glass after curved foam is bonded. Very light and very rigid.
Cushions are one layer green and one layer blue temperfoam for seat and one layer blue for backrest.
Sheepskin cover for cushion surfaces will be sewn to fabric skirts for Velcro attach to foam/ glass sides/ front /etc.
Send me your email for pics if interested.
Decamplarry@gmail.com