Check out this video from MOCA about the digital and mechanical process used to create Feathered Edge.  The simple fact that MOCA and the artists chose to include a video revealing the making of the Feathered Edge indicates that Ball-Nogues emphasize the process as much as the final product of their work.
The Making of Feathered Edge

With this video I was most interested in the similarities between Ball-Nogues' work and that of the California Light and Space artists in that they both emphasize the organic conditions that effect the viewing experience and, to extrapolate, all of our experiences.
Video with Robert Irwin