The new, larger wax plates have been coated in ceramic. When they have enough layers we will burn them out to get rid of the wax. The ceramic moulds will then be ready to take the molten metal.
The plates look a little elaborate with all their runner systems added but this is to ensure the gases have enough room to escape and that there is enough pressure created for the metal to fill the plate fully. Once cast the ceramic will be removed with a hammer and the runner systems cut off.