[SOLVED] Extruder keeps stopping

Discussion in 'Calibration, Help, and Troubleshooting' started by Dave Qua, Apr 29, 2016.

  1. Dave Qua

    Dave Qua Member

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    Just finished building my BB Pro single extruder and I've got everything calibrated. Now I'm trying to get my first print done without a great deal of success. I'm trying to print the 3DBenchy file on the SD card. Everything goes fine for a while then when the print gets to about 2 or 3mm high the filament stops extruding. Print quality of this small print looks great. The reel of filament is loose and the filament itself is unwinding OK. I've cleaned off the hobgoblin and tried every pressure setting from zero up to max on he Extruder idler without success as the Extruder just stops extruding for no apparent reason. I'm using ABS filament at an Extruder temp of 230

    Looking at the filament as it exits the hobgoblin there is clear evidence of indentations made by the hobgoblin but no signs of it stripping the filament

    Has anybody experienced the same problem or got any ideas as to what I can try next?
     
  2. Henry feldman

    Henry feldman Well-Known Member

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    Does it say "Thermal Runaway" on the display?
     
  3. Dave Qua

    Dave Qua Member

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    Just done another print to see if I could get any more info. Extrusion stopped at almost the same place (8 mins, layer 15). There was no indication on the LCD that anything was wrong ( no warning of Thermal Runaway). Print head continued to move as though it was printing and the hobgoblin was rotating - just nothing coming out of the Extruder. When I stopped the print and pushed the filament down into the Extruder then it extruded through the nozzle. After stopping the print I removed the filament. There were clear indentations from the hobgoblin on the filament. See photo

    image.jpeg
     
  4. Falc.be

    Falc.be Well-Known Member

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    i think 230 is a little low for abs
     
  5. Nicu Damse

    Nicu Damse Member

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    Is the 40mm fan on the hotend running normally ? I had similar issues with a delta i build with a E3D V6 because i hooked up the fan on the same loop as the cooling fan and when switching from PLA i forgot that and it would clog up the hotend.
     
  6. TstarkEngineering

    TstarkEngineering Well-Known Member

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    are you using a titan by any chance?
     
  7. Dave Qua

    Dave Qua Member

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    Many thanks for the replies. Just to answer the queries raised
    1. I'm using 230 deg for Extruder temp as that is the temp I use for ABS on my soundforge creator pro with no problem. I'll try increasing the temp a bit and see if it helps

    2. The 40mm fan on the hot end seems to be running Ok - what symptoms would I see if it was not?

    3. No I'm not using a Titan, I've got a E3D V6. However looking at the advert for the Titan I received I am tempted to upgrade

    I think I will try printing out a different object in the, probably forlorn, hope that there is something wrong with my 3DBenchy file
     
  8. Dave Qua

    Dave Qua Member

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    Now I've given up with ABS and moved on to PLA. Guess what? - exactly the same problem:). Extruded works OK for about 15 layers then stops extruding. I've also had problems getting the filament calibrated (both on ABS and PLA) I'm extruding about 85mm instead of the 100mm I expect. Applying the formula to correct does not seem to have any effect. Still, on the bright side, I did manage to print a 5mm high portion of the 3DBenchy before the extruder stopped working so there must be a solution somewhere
     
  9. TstarkEngineering

    TstarkEngineering Well-Known Member

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    Are you running m502 and m500 upon reboot
     
  10. Dave Qua

    Dave Qua Member

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    I know nothing about gcode unfortunately but having looked up M502 and M500 on google I assume you mean

    1. Am I restoring to factory settings after reboot - answer is no
    2. Do I store any changes I make in memory - answer is yes

    Have I understood you correctly?

    May be worth my while restoring to factory settings and starting again afresh
     
  11. Dave Qua

    Dave Qua Member

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    At Last!! 3dBenchy printed out in PLA and looks great. I'n not entirely sure what he problem was. Stripped down the hot end and cleaned it out. Some bits of gunge in the top of the nozzle. Then carried out a filament calibration which went perfectly - 100 mm extruded at the default setting.

    Printed 3dbenchy directly onto the glass bed (nozzle temp- 210 and bed at 50 and it stuck beautifully. No problems with the Extruder stopping

    Many thanks to all who helped me out

    image.jpeg
     
  12. Steven Burns

    Steven Burns Well-Known Member

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