At this point all of the shims or dividing lines are in place. The next step will be to paint additional coats of rubber over the entire piece including the shims.
There are two types of shims visible in this photo, most of the shims are constructed to provide a break in the mold, but in two areas they have "windows" cut into them with half spere plastic partitions or "keys" inserted. These are areas where the mold on either side can be joined back together later and wax will be poured as a hollow instead of a panel.
Here is a close-up of one of the keyed areas.
