In the second phase 

of the observatory panels, a new design is generated to emphasise the possibility of designing for repair through geometric and material specification, linking initial design with monitoring, diagnosing and repair processes. Throughout their exposure we are tracking across the assembly and isolating features within panels, in this case the overhang sacrificial layer. This requires a differentiation in depth and colour between the base and the feature in the design stage. Other considerations relate to the re-fabrication process, where a high density lattice pattern on the drip nose, an inward slope of the tip and stepping edges create the space for the nozzle movement during repair. The overall panel geometry is based on a grid pattern, while the direction of the overhang layer across the assembly is given by a wet threads form finding algorithm. For this phase, the material specification differs the cotton recipe is used for the base due to its higher tensile strength, bark and cotton recipe for the overhang layer, and wood flour us used for an intermediary layer between the base and the overhangs to create a contrast in colour.