I am trying a new experiment making a mold from porcelain. . The technical challenge is getting a detailed mold from the bisque, which is dry and porous. So I am trying to make a mold using wet clay. I thought I would share step by step as I am working on this experiment.
below: the carvings themselves are porcelain, carved while wet, leatherhard, and bone dry. Each one took about 3-4 hours to carve. They are flat on the backs and about 1 1/2"w by 2" high. They have been bisque fired to cone 06.
above: pushing up the walls around the carving. I tried to press down on the carving as I did the edges, so it didn't shift.above: All the sides pressed up and smoothed out evenly. The carving is then carefully pulled out of the clay using the handle, trying to pull straight up and not distort the surface underneath.
above: on the right, the carving
Will this mold work well? I don't know yet! I have to fire it now, as it is very fragile at this point. The nice thing about firing it is that the clay will shrink and will look more detailed. Stay tuned as I fire the molds and try to do a pressing later this week!