dscott, I coopered the panels and raised them in a concave shop made form on the shaper..
Rails were made off a pattern then fed down a concave form for the sticking cut.
Stiles were cut traditional way.
This job took a large amount of patterns, bearings, jigs and fixtures to produce I think about 50 or so different radius components.I dug into my stash and brought out some really nice wood for this piece.
It seemed like a mountain of cherry was used!

steve66