Double Decker type construction with muffles body at top & control box at bottom with 1"solid spacer in between Coil type Heater of Kanthal wire wounded on muffle with cerewool blanket &Brick insulation of 4" to have skin temp. of furnace less than 50 C Hinge door with lock system to openclose muffle Furnace. The control panel: At base of furnace with controller, stand by solid-state fuse with CrAl Thermocouple. Microprocessor based temperature controller cum indicator controls heating process.