PTFE pulled into extruder gears

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I have a Tevo Tarantula, the problem is that PTFE is getting pulled back to the extruder gears and stopping filament extrusion, do you know how to solve this?



Image:



Extruder gears



One hypothesis I have is that there is a cooling problem in the hot end while a retraction is made, causing the extruder motor to pull the PTFE in it.



Suggestions appreciated!






tarantula







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    up vote
    2
    down vote

    favorite












    I have a Tevo Tarantula, the problem is that PTFE is getting pulled back to the extruder gears and stopping filament extrusion, do you know how to solve this?



    Image:



    Extruder gears



    One hypothesis I have is that there is a cooling problem in the hot end while a retraction is made, causing the extruder motor to pull the PTFE in it.



    Suggestions appreciated!






    tarantula







    share|improve this question









    New contributor




    AlonMln is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.





















      up vote
      2
      down vote

      favorite









      up vote
      2
      down vote

      favorite











      I have a Tevo Tarantula, the problem is that PTFE is getting pulled back to the extruder gears and stopping filament extrusion, do you know how to solve this?



      Image:



      Extruder gears



      One hypothesis I have is that there is a cooling problem in the hot end while a retraction is made, causing the extruder motor to pull the PTFE in it.



      Suggestions appreciated!






      tarantula







      share|improve this question









      New contributor




      AlonMln is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      I have a Tevo Tarantula, the problem is that PTFE is getting pulled back to the extruder gears and stopping filament extrusion, do you know how to solve this?



      Image:



      Extruder gears



      One hypothesis I have is that there is a cooling problem in the hot end while a retraction is made, causing the extruder motor to pull the PTFE in it.



      Suggestions appreciated!






      tarantula




      tarantula






      share|improve this question









      New contributor




      AlonMln is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question









      New contributor




      AlonMln is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      share|improve this question




      share|improve this question








      edited 6 mins ago









      Greenonline♦

      3,0343844




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      asked 2 hours ago









      AlonMln

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          1 Answer
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          up vote
          2
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          You are probably right, I have a Tarantula as well, and this happened many times to me. The reason is mostly because the fan gets too hot, stops working, then, the aluminium heat sink melts and stick the filament inside the PTFE tube. Then, on the retraction the PTFE is pulled into the gears, just like your picture. Also, the filament stops getting extruded a few moments later.



          One solution for that was to buy a new PTFE tube with a pneumatic connector that doesn't allow it to slide into the gears. However, the diameter of the screw thread was too large, so I had to design another of this golden part (forgot the name) to fit it.



          I bought it from this link: PTFE teflon tubing 1mm teflon For 3D Printer Parts Pipe Bowden J-head.



          Maybe you can find a pneumatic connector with the proper diameter.



          However the real solution is to check why the heat sink is getting too hot. I bought a few other fans and printed an additional support for them on the hotend and I am making sure the fan stays on all the time.



          I hope it helps!






          share|improve this answer










          New contributor




          Gui Herzog is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.

















          • good answer. there is to chance to get hot filiament in default Bowden setup. The provided fitting is just a bad quality - so need to be replaced. I also was cutting down the PTFE to allow a better grip
            – profesor79
            29 mins ago











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          up vote
          2
          down vote













          You are probably right, I have a Tarantula as well, and this happened many times to me. The reason is mostly because the fan gets too hot, stops working, then, the aluminium heat sink melts and stick the filament inside the PTFE tube. Then, on the retraction the PTFE is pulled into the gears, just like your picture. Also, the filament stops getting extruded a few moments later.



          One solution for that was to buy a new PTFE tube with a pneumatic connector that doesn't allow it to slide into the gears. However, the diameter of the screw thread was too large, so I had to design another of this golden part (forgot the name) to fit it.



          I bought it from this link: PTFE teflon tubing 1mm teflon For 3D Printer Parts Pipe Bowden J-head.



          Maybe you can find a pneumatic connector with the proper diameter.



          However the real solution is to check why the heat sink is getting too hot. I bought a few other fans and printed an additional support for them on the hotend and I am making sure the fan stays on all the time.



          I hope it helps!






          share|improve this answer










          New contributor




          Gui Herzog is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.

















          • good answer. there is to chance to get hot filiament in default Bowden setup. The provided fitting is just a bad quality - so need to be replaced. I also was cutting down the PTFE to allow a better grip
            – profesor79
            29 mins ago















          up vote
          2
          down vote













          You are probably right, I have a Tarantula as well, and this happened many times to me. The reason is mostly because the fan gets too hot, stops working, then, the aluminium heat sink melts and stick the filament inside the PTFE tube. Then, on the retraction the PTFE is pulled into the gears, just like your picture. Also, the filament stops getting extruded a few moments later.



          One solution for that was to buy a new PTFE tube with a pneumatic connector that doesn't allow it to slide into the gears. However, the diameter of the screw thread was too large, so I had to design another of this golden part (forgot the name) to fit it.



          I bought it from this link: PTFE teflon tubing 1mm teflon For 3D Printer Parts Pipe Bowden J-head.



          Maybe you can find a pneumatic connector with the proper diameter.



          However the real solution is to check why the heat sink is getting too hot. I bought a few other fans and printed an additional support for them on the hotend and I am making sure the fan stays on all the time.



          I hope it helps!






          share|improve this answer










          New contributor




          Gui Herzog is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.

















          • good answer. there is to chance to get hot filiament in default Bowden setup. The provided fitting is just a bad quality - so need to be replaced. I also was cutting down the PTFE to allow a better grip
            – profesor79
            29 mins ago













          up vote
          2
          down vote










          up vote
          2
          down vote









          You are probably right, I have a Tarantula as well, and this happened many times to me. The reason is mostly because the fan gets too hot, stops working, then, the aluminium heat sink melts and stick the filament inside the PTFE tube. Then, on the retraction the PTFE is pulled into the gears, just like your picture. Also, the filament stops getting extruded a few moments later.



          One solution for that was to buy a new PTFE tube with a pneumatic connector that doesn't allow it to slide into the gears. However, the diameter of the screw thread was too large, so I had to design another of this golden part (forgot the name) to fit it.



          I bought it from this link: PTFE teflon tubing 1mm teflon For 3D Printer Parts Pipe Bowden J-head.



          Maybe you can find a pneumatic connector with the proper diameter.



          However the real solution is to check why the heat sink is getting too hot. I bought a few other fans and printed an additional support for them on the hotend and I am making sure the fan stays on all the time.



          I hope it helps!






          share|improve this answer










          New contributor




          Gui Herzog is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.









          You are probably right, I have a Tarantula as well, and this happened many times to me. The reason is mostly because the fan gets too hot, stops working, then, the aluminium heat sink melts and stick the filament inside the PTFE tube. Then, on the retraction the PTFE is pulled into the gears, just like your picture. Also, the filament stops getting extruded a few moments later.



          One solution for that was to buy a new PTFE tube with a pneumatic connector that doesn't allow it to slide into the gears. However, the diameter of the screw thread was too large, so I had to design another of this golden part (forgot the name) to fit it.



          I bought it from this link: PTFE teflon tubing 1mm teflon For 3D Printer Parts Pipe Bowden J-head.



          Maybe you can find a pneumatic connector with the proper diameter.



          However the real solution is to check why the heat sink is getting too hot. I bought a few other fans and printed an additional support for them on the hotend and I am making sure the fan stays on all the time.



          I hope it helps!







          share|improve this answer










          New contributor




          Gui Herzog is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.









          share|improve this answer



          share|improve this answer








          edited 5 mins ago









          Greenonline♦

          3,0343844




          3,0343844






          New contributor




          Gui Herzog is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.









          answered 50 mins ago









          Gui Herzog

          1212




          1212




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          Gui Herzog is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.





          New contributor





          Gui Herzog is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.






          Gui Herzog is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.











          • good answer. there is to chance to get hot filiament in default Bowden setup. The provided fitting is just a bad quality - so need to be replaced. I also was cutting down the PTFE to allow a better grip
            – profesor79
            29 mins ago

















          • good answer. there is to chance to get hot filiament in default Bowden setup. The provided fitting is just a bad quality - so need to be replaced. I also was cutting down the PTFE to allow a better grip
            – profesor79
            29 mins ago
















          good answer. there is to chance to get hot filiament in default Bowden setup. The provided fitting is just a bad quality - so need to be replaced. I also was cutting down the PTFE to allow a better grip
          – profesor79
          29 mins ago





          good answer. there is to chance to get hot filiament in default Bowden setup. The provided fitting is just a bad quality - so need to be replaced. I also was cutting down the PTFE to allow a better grip
          – profesor79
          29 mins ago











          AlonMln is a new contributor. Be nice, and check out our Code of Conduct.









           

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