We created a field condition involving the intersection and manipulation of sine waves, to test how a rough concrete mixture would respond to a fluid surface with sharp edges (the intersection lines between the sine waves). While our first test used a fine cement for casting, this form was cast with 90lb concrete in order to observe the behaviors of the large aggregate on a cnc routed surface.
The resulting panel taught us that the lines created by the cnc toolpath are very important because they show up even in concrete with large aggregate. The intersection lines, which we found to be the most interesting aspect of the grasshopper definition, were mostly imperceptible in the realized concrete panel.
We began by taking the pattern from the original origami structure and analyzed its modules. Additionally, we broke down the pattern of the fish-bone structure, determining the balance of peaks and valleys within the system. By meshing the modules of these two systems together we were able to create a new original module. Using the graph-mapper tool in grasshopper we manipulated the sizes of the modules to effect the form of the origami structure.
This panel tested the level of detail that we could capture from the 2 step process of cnc rounting and then casting into concrete, by creating a gradient of objects which increased in size from nothing to past the point of intersecting. The hope was that one side of the panel would read as objects in a field (the base doubly curving surface) but the other side would read as the field being composed just from objects. The definition allows for the control of the height, diameter, spacing, and number of sides of the pyramid voids, but getting the overlapping portions to trim and work with RhinoCAM was the problem which limited our full intentions with this pattern.