1 Topic by edward4000

  • edward4000
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  • From: UK
  • Registered: 2013-05-22
  • Posts: 11

Topic: CTC printer nozzle jams every few prints.

I have tried higher temperatures, lower temperatures and all sorts of settings.  My filament is dried and spooled off from a PrintDry unit.  I clean the filament as it enters the printer with a foam pad but still all 3 of my CTC printers will jam and stop printing fairly frequently.  It seems that the PTFE liner in the extruder becomes clogged and somewhat misshapen.  Each printer has 2 extruders on and so I have 6 in total - all of them fail on a regular basis.  After replacing the nozzle and the PTFE tube and cleaning out the extruder they work again.

So how can I make the hotend last longer, am I doing something wrong that it fails so quickly?

Is there a far more reliable solution out there which I could retro fit to my CTC printers?

Does anyone else have this issue of regular print failure?  If not then which hotend are you using please?


Just to clarify I probably get about 10 to 30 hours of printing before a failure but this seems like a pretty short time.

Thanks in advance.

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2 Reply by carl_m1968 (edited by carl_m1968 2017-03-25 18:49:57)

  • carl_m1968
  • carl_m1968
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  • Registered: 2014-10-17
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Re: CTC printer nozzle jams every few prints.

I have a CTC now converted to an Azteeg X3 board but my fix for the jamming filament is not using the tubes and feeding from the back of the machine. Instead I hang the spool above the printer and let it feed straight down to the extruder. I have not had any misprints or jams. I also upgraded to MK10 heads. They use springs to keep the idlers pushed against the filament.

You can get them here complete with harness.

http://unclechucks3dprinterstuff.com/du … %20oem.htm

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

3 Reply by edward4000

  • edward4000
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  • From: UK
  • Registered: 2013-05-22
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Re: CTC printer nozzle jams every few prints.

Thanks carl_m1968.  I def would like to upgrade them since I know they are capable of creating good prints but the reliability so far just sucks.   I think I shall try and get some all metal hotends installed and also look at how the spools are mounted.

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