The grid is defined by the geometric form of the membrane at the time paint was poured over the surface. So when we observe the image on the flat 2-dimensional picture plane it appears distorted. Interesting how the low lying parts of the folds have defined the grid edges. This is unseen until it is fully stretched and mounted. For a full explanation see About Membrane Art in the menu.
See MA#49 in the fresh at the Energy Travels exhibition – Angas Travel for the SALA Festival 2015. On until 31 August, 2015.