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Unresolved Was working great, now it stabs my prints

Discussion in 'Troubleshooting' started by KH6EF, Nov 14, 2015.

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  1. KH6EF

    KH6EF New Member

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    I got a few good prints out of the Robo 3D Plus. I printed the Gravity Falls WHAT weather vane. Now, no matter what I try to print, it will eventually stab my print and start dragging it all over the surface. I have no idea what happened.

    I thought it may be a lifting problem, so I tried making a raft. That didn't help. I changed the bed temperatures based on recommendations out there, but no luck.
     

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    #1 KH6EF, Nov 14, 2015
  2. Mike Kelly

    Mike Kelly Volunteer

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    A) be sure you use something to adhere the print to the glass, aquanet hairspray is a good choice

    B) make sure the bottom cooling fan is running and print some lifter feet/lift up the base so it gets good airflow
     
    #2 Mike Kelly, Nov 16, 2015
  3. KH6EF

    KH6EF New Member

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    It stabs the prints. It will be printing fine then suddenly it stabs whatever it is printing.
     
    #3 KH6EF, Nov 16, 2015
  4. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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    Try the same part with a different slicer, I am not picturing exactly what you mean, but this suggestion is a stab at guessing what you meant. If it behaves the same then it is likely the model, if it works, then its likely a slicer setting.
     
    #4 WheresWaldo, Nov 17, 2015
  5. Geof

    Geof Volunteer Moderator
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    I had the issue not using glue or aqua net to hold the piece down... What would happen is the piece would warp off the bed, the extruder would then appear to be dragging it over the print bed. Is this what's happening?
     
    #5 Geof, Nov 17, 2015
  6. Mike Kelly

    Mike Kelly Volunteer

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    Like the nozzle lowers into the print? I think you're confusing something about what's happening. Did you try my troubleshooting advice?
     
    #6 Mike Kelly, Nov 17, 2015
  7. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Yes, that would be really odd behavior. I have never seen anything like that.
    Collisions with previous layers (due to curling)? Sure, a stop-and-stab? No.
     
    #7 mark tomlinson, Nov 17, 2015
  8. Geof

    Geof Volunteer Moderator
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    I have to assume that he is having sticking issues on the first layers...I just can't see the extruder falling into the print ?
     
    #8 Geof, Nov 17, 2015
  9. KH6EF

    KH6EF New Member

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    To explain what is happening. It will be laying down layers, the machine stops, then the head lowers down and pushes into the print. I tried Cura as an alternative. I also tried in Linux, but Matter Control won't connect to the printer.
     
    #9 KH6EF, Nov 17, 2015
  10. KH6EF

    KH6EF New Member

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    It's not a problem of the print lifting. It will stop and lower the head until it pushes into the print.

    I would print feet, but I am only getting about a 15% success rate at the moment.
     
    #10 KH6EF, Nov 17, 2015
  11. KH6EF

    KH6EF New Member

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    It's not falling, it's being pushed into the print.
     
    #11 KH6EF, Nov 17, 2015
  12. Geof

    Geof Volunteer Moderator
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    have you tried to print off an sd card? I ask to rule out a communication error from the computer or cord
     
    #12 Geof, Nov 18, 2015
    mark tomlinson likes this.
  13. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Yes, SD card is an excellent option. Also examine the communications log to see what errors are being reported from the printer.
     
    #13 mark tomlinson, Nov 18, 2015
  14. KH6EF

    KH6EF New Member

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    I did another print and watched the logs. When it stops printing, there are no more lines added to the log. When the Z axis starts to move there aren't any lines added to the log either. Matter Control says it is still connected and responds to cancel print then moves the head to the home position. I looked through the log to see if I could spot anything which looked like an error, but didn't see any. All lines "OK"

    I will try the SD card, if I can find one of those Micro SD to SD adapters.
     
    #14 KH6EF, Nov 18, 2015
  15. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    I'd suggest also trying different software.
    It may be mattercontrol misbehaving.
     
    #15 mark tomlinson, Nov 18, 2015
  16. KH6EF

    KH6EF New Member

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    Tried Cura.
     
    #16 KH6EF, Nov 18, 2015
  17. Mike Kelly

    Mike Kelly Volunteer

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    I'd like to see a video of this. Unheard of failure
     
    #17 Mike Kelly, Nov 18, 2015
  18. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Yea, unless the model is broken and generating bogus tool paths that is a really strange failure.
     
    #18 mark tomlinson, Nov 18, 2015
  19. Chuck Erwin

    Chuck Erwin Active Member

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    I would suggest calling Robo3d tech support they helped me.
    I had a very similar problem that my first layer was fine then it would not lift and it dragged across the print.. Turned out to be the fan with out it it heats up the ramps and then it causes communication error preventing the z-motor from operating properly

    Call them they helped me in about a day.
     
    #19 Chuck Erwin, Nov 18, 2015
  20. Geof

    Geof Volunteer Moderator
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    I suppose you could upload the stl, if someone can print it successfully you'd know it's in the printer, but I imagine you have tried other prints with the same issue?
     
    #20 Geof, Nov 18, 2015
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