Can anyone point me in the right direction to find a schematic diagram for automatic temperature control on a home made electric shop oven? Inside furnace dimension about 6x6x6 inches plus premolded insulation. My heat source is a discarded 1500-watt 230 volt spiral wound element from a domestic stove. My cost = $0. I would like to operate at about 1000-deg F for burnout on lost wax investment molds. The best control would be ramp up to around 250-deg F and hold 30 minutes for the preliminary melt out, then go up to 1000 deg for one hour final burnout. Furnace is already constructed and works great on manual control using one type "K" TC and a hand held readout, but of course this requires hands-on attention. TIA Dave
- posted
18 years ago