G-M Enterprises has developed several energy saving-technologies for a high-tech vacuum furnace. Thin, curved graphite elements reduce mass, heating and cooling times. In addition, 2.5-inch-thick graphite insulation with CFC hot face offers high efficiency and durability. An advanced control system with seven bands of PIDs of control using auto fine-tuning control adjustment for optimized heating profiles reduces temperature overshoot and shortens cycles, reducing the total energy required.