I added the pockets for the small magnets shown in RED. The magnets will keep the two opposing diaphragms together on a curve and straight.
The brownish frame shown above attaches to the end of the passenger car doorway frame. This frame would be solid resin.
The flex resin bellows attaches to the brown frame with crazy glue. Surprised me that my sample flex resin could be "crazy" glued to solid gray resin. FormLabs engineers didn't know this!?
More importantly, I now have flexible resin to experiment with.
Ill keep you all posted.