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Thread: Best thermometer for powder coating oven

  1. #1
    Boolit Buddy
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    Best thermometer for powder coating oven

    I recently picked up a used convection oven for powder coating. What is everyone using ( if at all) for and oven thermometer? Been on Amazon.ca ( I'm from Canada ) and there seems to be some mixed reviews on certain thermometers. I did my 1st batch of 230 gr .45acp boolits in it tonight with the dial at around 450 for 25 mins and the batch passed the hammer test. I tried just sticking the probe from my Lyman temp gauge just in the door but figured I'd be loosing too much heat with the door cracked to accommodate the probe so I just trusted the temperature of the oven. I like to get an oven thermometer to put inside while baking just so I know what the temp is.
    If using a PID ( the one I use for casting ) would drilling a hole in the top of the oven be the best way to insert the temp probe and would in be accurate considering the probe is supposed to sit in the melted lead to get a proper reading?

  2. #2
    Boolit Master bosterr's Avatar
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    I drilled a hole through the opposite end of my oven from all the controls for my PID probe to just be below the wire rack on which the boolit tray sits. I drilled through the outer metal shell and wobbled the bit through the void to hopefully miss any wires that may be in there, and then drilled the hole through the inner metal. It works just fine for me.

  3. #3
    Boolit Master


    Finster101's Avatar
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    Way overthinking it. A cheap oven thermometer to tell you that 400 degrees has been achieved is all you need.

  4. #4
    Boolit Master
    Hick's Avatar
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    replying to the "if at all" part: No. I've done thousands of bullets and do not use a temperature measurement. BUT if you do without you need a little discipline. That is, always do the same size batch of bullets and mark the dial on your oven at the spot that works. I do 50 at a time so that I can stand them up.
    Hick: Iron sights!

  5. #5
    Boolit Master


    cwlongshot's Avatar
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    I agree. "BEST" is gonna be a PID. I use one for my lead but not my oven. I use a inside oven unit and a laser unit so I have two to be sure one isnt faulty.

    CW
    NRA Life member REMEMBER, FREEDOM IS NOT FREE its being paid for in BLOOD.
    Come visit my RUMBLE page!!

    https://www.RUMBLE.com/user/Cwlongshot

  6. #6
    Boolit Master slim1836's Avatar
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    I use the "inside the oven" clip on as sold by WM. I've got an extra PID I'm tempting to try on my oven, just don't know just where to mount the probe yet.

    Slim
    RETIRED
    NOT MY PROBLEM ANYMORE

    LET'S GO BRANDON

  7. #7
    Boolit Master bosterr's Avatar
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    I just bought a $20 walmart toaster oven and just finished baking some boolits. I used the top tray groove of the 2 because it was closer to being right between the upper and lower heating elements. I drilled a hole through the left end of the oven and the probe sits about 3/8 of an inch below the tray. I cooked them for 30 minutes at 425 degrees and after about 10 minutes the PID stayed there there rest of the way without moving at all. This cheap oven works way better than a more expensive Black & Decker I retired to boolit baking. It seems the B&D heat controls were conflicting with the PID.

  8. #8
    Boolit Master Retumbo's Avatar
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    Pid, open the oven up and rip out the thermal control it comes with

  9. #9
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    Steve,

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