I would like to animate several postcard shaped objects that have a slight concavity to them (a slight upward arc). They need to fall together and land on a plane. They need to have some spring in them when they land, but spring back to their original shape once they settle with the consistency of thin cardboard or photo paper.
I am using a mesh I converted from a NURBS surface, that I extruded to have the thickness of a postcard. I would think that I could animate this using the soft body physics, but the center of the card sags no matter what I do.
I am able to get it to nearly work when I create the arc in the postcard object from half of the rounded side of a cylinder and reduce the gravity to nearly 0, but that only gives me concavity along one axis, but I need concavity along X & Y (like the default NURBS surface).
I’m using Blender 2.54 Beta
Any insight would be greatly appreciated!