While casting gold silver jewelry, you need to make plaster mold. So you need an oven to burn out the plaster. Hajet's self-designed burnout furnaces are well used in gold silver jewelry casting. With maximum temperature of 1150 degress. Working temperature at around 900 degrees. For below 9 pcs flasks capacity, there're single stage and programmable for option. For more than 12 pcs flask capacity, they are all programmable types.