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screw in thermistor for hot end

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  • screw in thermistor for hot end

    A few months ago I bought a screw in thermistor for my enders pro hot end and I thought it was the best thing since sliced bread, https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1. Mine broke and I am trying to find a replaxement but rhe same thg on amazon.ca is $50 or so Can and on Amazon.com it was like $12 US but they are out of stock. I have no idea why they even cost $12 because they are nothing but I hate the fiddly usual ones. They are supposed to be good for nearly all Chinese 3d printers. Does anyone know where to get them for a dexent price and not a 3 month wait?

  • #2
    Amazon US shows them in stock. Or, you could try the manufacturer -- Gulf Coast Robotics.

    Cheers!

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  • #3
    Wow, only $10US from Gulf Coast. Even with exchange & shipping it should be quite affordable.

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    • roon4660
      roon4660 commented
      Editing a comment
      They only have the crappy ones I ordered it from 3d printing Canada. They still dinged me on the shipping but I am paying the same dollar amount in Canadian dollars.

  • #4

    The main issues with thermistors is that they may not come into contact with the inside of the heater block or due to the movement of the heater block rattle inside returning different values over time depending on the position.

    Thats why you need to insert them all the way in, until the touch the end of the hole and tighten the screw between the wires, without breaking the insulation, which cause false readings.

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    • Ender5r
      Ender5r commented
      Editing a comment
      I can't help thinking a small silicon washer between the thermistor retaining bolt & wiring would go a long way to preventing damage to the wiring.

  • #5
    You would not believe how many I broke.

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    • #6
      Wow thwy really qant to stick me for postage. It's more than the thermistor. I will just wait for a Canadian supplier to get back to me. Thanks for your help Alan.

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      • #7
        Still, $23 to fix the problem doesn't seem sooo bad.

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        • #8
          I will spend it rather than fiddle with those cheap things that is for sure.

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          • #9
            I recently bought a badge of 10 for 8,99 or so, because I had the insulation broken after the hotend got all gunked up, but I fixed it with some kapton tape, so they are all in stock now.

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            • #10
              You are talking about the fiddly little ones that break and crush. Yeah they are cheap I had a bunch of them. I want the one with a brass fitting that screws into the hot end and a quick connect.

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              • #11
                Actually I got mixed up I did order from Gulf Coast and am paying in USD. I have these sorts of days.

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                • #12
                  Originally posted by roon4660 View Post
                  You are talking about the fiddly little ones that break and crush. Yeah they are cheap I had a bunch of them. I want the one with a brass fitting that screws into the hot end and a quick connect.
                  Yes, I intentional did that. Once mounted correctly they work just fine.

                  Just a side note: When replacing them you should make sure they are the same type or your temperatures will be all over the place. In that case you need to compile the firmware of your printer to make it recognize the new sensor version. Usually a version is used that is 100K on 25°C or so. But even if that is true the curve can be different.

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                  • #13
                    I think it will be immediately apparent if there is a problem.

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                    • #14
                      I could have bought them on Ebay.ca and had two for the price of one and actually less . Less for delivery etc. $Can instead of $US. I have already ordered the other and I think it will last till I sell my Ender 3 pro and buy the duel printer head that Ender 5r is getting. After I see how he likes it.

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                      • #15
                        This is what I could have had, instead of paying $24 US.
                        Attached Files

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