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elijahjue

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  1. Heat treat oven build help

    elijahjue posted a topic in Heat Treating, general discussion
    Hay all I am trying to build a Kiln (Heat treat oven) for my knife making so that I can temper my blades but I am no electrician and I need help figuring out how much resistance I need in the coil that will be heating the oven I'm going to be running it on 220v the oven inner chamber dimensions are 31,1/2 inches deep 8,1/2 inches wide and 6,1/2 inches tall the coil slot is 11 feet long the inner diameter of the coil I made is 9.5mm I wrapped the wire around a 3/8in metal rod and the kanthal wire is 16 AWG, Average wire diameter: 0.0508 in. (1.29032 mm), 0.324 Ohms/ft at 68°F ALLOY: Kanthal A-1 (22% Cr, 5.8% Al, Fe balance). Rated for temperatures up to 1400°C (2550°F). I am going to be heating this oven up to 1500- 2000 degrees and I need it to hold temp as evenly as posable for as long as posable Thank you

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