SoliForum - 3D Printing Community — CTC printer nozzle jams every few prints.

Re: CTC printer nozzle jams every few prints.

null@example.com (edward4000) — Mon, 27 Mar 2017 10:17:52 +0000

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.

Re: CTC printer nozzle jams every few prints.

null@example.com (carl_m1968) — Sat, 25 Mar 2017 18:49:47 +0000

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

CTC printer nozzle jams every few prints.

null@example.com (edward4000) — Sat, 25 Mar 2017 08:33:34 +0000

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.