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Maybe OT: Need input for turning self cleaning electric oven into a tempering furnace

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  • #31
    Just in case anyone needs to know, a real cheap source for heating elements is replacement dryer elements -- for example:

    https://www.ebay.com/itm/131475400-N...oAAOSwOmtcsAO-

    (Kenmore replacement nichrome, $12, I wonder what could be done with a few of these in a tight space with kaowool)

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    • #32
      Possibly relevant: many people build solder reflow ovens from small toaster ovens. You might have to buy up-rated relays, but I bet you can use their control system no problem: https://whizoo.com/reflowoven

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      • #33
        If you bought one of those Chinese PID controllers you should be very wary of how it works. We were having problems welding HDPE with one and found out the temperature was WAY off. I replaced it with a FUJI controller that I have used in the past. Fuzzy logic controller. It runs a test cycle and learns how the oven responds then nails the temperature without overshoot every time. Some models have soak, and ramp functions too which are useful for heat treating.

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        • #34
          Honey, your home! Surprise, I upgraded the oven!

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          • #35
            "Nothing says machining like something in the oven"? Nah, just doesn't have the same ring to it....

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            • #36
              I use a small toaster oven to temper knife blades. It will reach 600 DF and is controllable to 450 dF..
              Works very well for my small knife blades. I have a dial thermometer inside I can see through the door window.
              i also use it to cure epoxy paint on gun parts.
              Seastar

              I cut it off twice and it's still too short!

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