With the rubber portion completed, now is the time to start on the plaster support shell, herewith is the photo of the first section of the shell hand-formed in place. While this hardens up I need to shovel snow off my driveway unfortunately, but about the time I finish that it will be time to form the next section.
Now with the first 2 sections done it’s time to add the rest needed for what will become a 12 piece shell. All the small pieces are required to deal with the multitude of deep undercuts and opposing surface angles. The smaller pieces also make it easier to dismantle and assemble:
Now with the mold removed from the original clay model it is set up and ready to cast a test interior cast-stone cast from.