Step 7: Making a mould
Sometimes in the casting process, their may be a casting failure, where the item doesn't cast perfectly. By making a mould, I can create duplicates of this ring.
If the first wax produced, fails to make a good platinum cast, I can simply go to this stage and create another wax model using the mould.
During the "lost wax casting " process, the wax is lost in the process when it melts in the kiln. By making a mould I wouldn't have to re-carve the model should a failure occur.