So I put one of the hot ends I got from Brook (a million

3D Printing
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So I put one of the hot ends I got from Brook (a million thanks @Brook_Drumm ​) and I set about printing on my Printrbot Plus. Nozzle worked fine and all tests went well. Then I found that again I had a stripped hole in my extruder faceplate so I rotated the motor 90 degrees to the left so I could attach my extruder to my remaining good 3 holes. Now the motor would just jitter so I suspected a connection issue. I rotated the motor back and for about 10 minutes it was working fine. Now for sure some wire is messed up. 10 minutes into a print the jitter was back and now it’s here to stay. So now I think my motor is bad due to wiring failure. Would you all agree? Seems that I need to replace the motor. I was hoping to not do this since that involves getting into the Boy’s guts. Does anyone have any tips for doing this? I am thinking of adding a connector so that I don’t have to do this ever again. While at it my Play will get its hardware and firmware upgrades.

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Motors rarely fail, but wiring does. It’s likely there is a break somewhere, find it, cut it out and add a connector.

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100% agree with @Stephanie_A I had the same issue from a stripped motor faceplate. Replaced the motor and got some jittering, BUT the motor I replaced it with had some wiring issues to start with. I switched the faceplates and put the old motor back on.

I would find the break and either solder some new wires on or if the break is somewhere in the motor then you could cut at the end and put a new motor in.

But yeah definitely sounds like a motor issue. Have had absolutely no issues with any drivers on our Printrboards.

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That’s what I think. The problem is finding the break. I would much rather replace the motor but I know that’s a bit of a pain.

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Ok, I’m too lazy to go figure out where the wire broke and it is far, far easier to just replace the motor. This time, I will fabricate a connector so that I can do this again and again as needed. So my question to you all: what type of NEMA 17 motor will do? What amount of holding torque for example? After I replace it, I will probably install a connector on the case…or just junk the motor (I have a box full of them anyway)…

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@Samer_Najia , typically you’ll find 4-4.5kg-cm 3v NEMA17 steppers on direct extenders; I think the printrbots use some sort of Kysan stepper, and a quick google search should get you the model number

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Thanks @Ishaan_Gov ​. @Brook_Drumm ​ any input? I went to the PB website but individual motors are not offered as spare parts.