Cuben chair not so good idea.
The material has no elasticity - won't mold to the shape of our nethers
It has no porosity - water will sit on it and soak our nethers
It doesn't hold stitching - soon our nethers will be on the ground
And no, will not depend on Hysol adhesive to hold me up
Leno-Loc works well, at around 5.5 oz/yd.
Would like to find something lighter, but so far, found nothing that will hold up.
LaFuma is now using a vinyl coated mesh that is twice the weight of Leno.
Haven't tried rawhide polyester mesh, only an ounce heavier than Leno, and has uneven stretch on the warp vs weft. Might work though, and with less sag due to the polyester, and less water absorption than nylon.
A one pound self-supporting chair is progressing well, Stay tuned to MYOG.