Hemera Jammed during first long Print

Discussion in 'HotEnds & Extruders' started by Darthy, Jan 22, 2020.

  1. Darthy

    Darthy Member

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    Hi,

    I received a hemera direct from e3d and it was an already assembled direct drive version that I'm popping onto my CR-10s.

    Installation went well and I followed the checklist for:

    -Vref
    -Esteps
    -Pid Tuning etc

    Printed a test cube and everything went fine, then tried to print this piggy bank https://www.thingiverse.com/thing:3490324 and after a few hours I heard the extruder clicking like mad and when I went to check on it, the hemera had stopped extruding and was kinda seized up.

    At the moment I'm using retraction settings of:

    - 0.5mm
    - 45 mm/sec
    - No coast / No Wipe
    - LA of 0.1

    Printing at 208 degrees PLA @ 50mm/sec

    I was having a look at the gears and have noticed that they look like they are out of alignment, not sure if it is supposed to be that way.

    [​IMG]

    Like I said, this is the way that it came from e3d, I didn't have to assemble this myself and I'd be really disappointed if this is a QC issue because it means taking apart the whole of my hotend assembly :(
     
  2. muad_did

    muad_did Member

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    Your hemera its not fully closed. look the screw at up-right and the space betwen pieces!. Take of the fan and screw it. You dont need to dismount all.
     
  3. SchmartMaker

    SchmartMaker Active Member

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    During the removal of the Hemera heatsink (to tap some M3 threads into the fan mounting holes), I already noticed that the two bolts that join the heatsink with the motor were not tight at all, coming straight out of the box. I would recommend everyone to take off the fan and double-check if these two bolts are secure enough.
     
    #3 SchmartMaker, Jan 23, 2020
    Last edited: Jan 23, 2020
  4. SchmartMaker

    SchmartMaker Active Member

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    And I would say that failing to torque/tighten bolts sufficiently and not discovering that before the product leaves the factory is indeed a QC issue.
     

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