practice of 'molding method'

 When the lost part of ceramics is too big to repair it trusting one's hunch, I could use 'molding method.'

I got this broken cup at a dump yard of a ceramic factory to practice the 'molding method'.
As one of four edges was gone, I made a mold of a not-broken edge with paper clay. And then I applied the mold against the lost part and filled it with 'kokuso' or lacquer clay.

After kokuso has dried, I shaped it. I didn't finish it with gold powder, because this is just for practice.