Hi Guys,
Enjoying the new printer. I have been printing with PA-CF for a month now. Great stuff and no issues until yesterday when a print finished (noting success) but it was 3/4 complete. I started a new print and the first layer failed. I allowed it to continue and there was no filament being laid down. A few hours to clear the nozzle and I got off a small print. Today, I had another incomplete print with more air printing. Is my nozzle dead or something else? Thanks!.
How long was the print running before it failed? How fast are you printing? I’m printing mainly PA-CF as well and had a similar issue in the beginning. It printed fine for 3 hours or so before getting stuck.
In my case I was printing a bit too fast causing the extruder to slip/grind into the filament over time. I solved it by lowering speeds a bit and increasing the temperature 5 or 10 degrees.
Hi, the first time it was about 5 hours into the print. The second time under an hour. I have done this same print before without issue. I suppose I will replace the ht end and see if that fixes things. What nozzle size are you using? Thanks!
I’m using the default 0.4 hot-end printing polymaker PA6-CF. No issues so far. I forgot to ask, which printer do you have? The X1 or X1C? This is important as the X1 does not use any hardened parts by default. Which would wear pretty quickly if you’re only printing PA-CF.
If you have the X1C I’m not sure what else could be cause issues except perhaps the filament itself.
What nozzle size & layer height does the manufacturer recommend? I’m already at the advised limit with 0.4 nozzle and 0.2 layer height. Any lower would likely cause clogs during longer prints due to fibre build-up.
Hi,
I am using the carbon version with hardened parts. I am using the .4 nozzle at .16 (although I have printed down to .08 and up to .2). I am almost always running at the default speed settings.
Thanks
I would have a look at the extruder gears ,not the yellow one but the one that is in contact with the filiment.
When I took mine out with similar issues there was alot of stuff in the small grooves.
It could be the same which would make it lose grip on the filiment.
Thanks Euro, You were getting air printing from this? Was the problem intermittent?
Hi Luuk, I am really struggling with this issue. What temperature and speed is working for you? Thanks
Right now i’m running at 290°C nozzle temp, 50°C bed temp, 0.93 flow ratio and a max volumetric flow of 8 mm3/s.
This results in an actual speed of about 100 mm/s at 10K acceleration.
Hope this helps at all, it’s been working fine for me, no issues yet.
Have you tried thoroughly drying the filament? wet nylon can cause unpredictable pressures possibly clogging the nozzle.
Hi,
What is your longest print so far? Thanks
Honestly not that long, probably 6 or 7 hours. Most of what I’m printing are smaller parts.