Uploaded December 2012 | Updated September 2026, 1 week ago
One has to be quite careful building this shape, especially the right order for connecting units is important. The shape is an intermediate between Schwartz' P and D surfaces, when observing a capsule as a chamber with 6 exiting tunnels it is the P surface, when observing each capsule as two parts with 4 exiting tunnels each it is the D surface. In the middle of each capsule there is a narrow part that makes it fair to think of this shape as the D surface.
One has to be quite careful building this shape, especially the right order for connecting units is important. The shape is an intermediate between Schwartz' P and D surfaces, when observing a capsule as a chamber with 6 exiting tunnels it is the P surface, when observing each capsule as two parts with 4 exiting tunnels each it is the D surface. In the middle of each capsule there is a narrow part that makes it fair to think of this shape as the D surface.
