Hi, does anyone have had similar feeding problem with None-Bambu PLA rolls?
The issue goes in cycles:
Prints would stuck during printing, had to pull out the fillament from the AMS; The tip of the fillament wire would have a small mushroom shape that stops the feeding.
I used sissors to cut the tip clean, feed it into AMS manually, hit resume to continue printing for a while.
20 layers, or could be 50 layers later, same issue again and repeat.
More info:
I was using Elegoo PLA, and Overture. Because they delivers over night(Amazon) and I needed that speed.
I tested 3 rolls of bambu basic PLAs, on 3 slots at the same time for 4+ hours, did not stuck.
I tested lower nozzle temperature of 200 Celcius and opening the door while printing. still had the issue, not sure if that improved the chance.
Anyone have any clue what does it happen?
Or using bambu fillament only is the way that I have to go?
Thank you
I would check the filament unwinds from the roll smoothly. Sometimes the winding is too tight and the AMS can’t pull it out. Also for non-Bambu spools, check it spins freely on the AMS rollers, sometimes the spool shape is weird. For cardboard spools also check the cardboard rims are not damaged.
Overture are a good outfit, and part of Polymaker. I haven’t used Elegoo much, cannot really say. In any case I find reliability is easier to track to indivudal models, not brands. Every brand has at least one lemon.
I have a similar problem too with my X2D, and I made a very honest but brutal post about it, if you want to find it just go to my recent posts, it’s labeled “my new X2D is the worst printer I have ever owned”, someone might reply with an answer on mine too, that’s why I’m mentioning this.
I have more Sunlu filament (spools) than I do Bambu now. I have also printed a few spools that are available on Makerworld. They are all plastic. No issues with feed.
There are plastic rings available on Makerworld for all the cardboard spools. These keep the cardboard from wearing against the AMS rollers and producing debris.
Make sure all your PTFE tubing has square cuts and is fully seated in the fittings.
… and don’t cut your tubes with scissors, it might slightly squish them. I’m using a sharp knife with a sliding motion and without applying too much pressure.
If you directly feed the filament do you see the same problem?
And how does it start as if it had the “mushroom head” should not be loaded even the first time?
And this head should caused because of heat, looks like small clog, so any chance that you get too long retraction in the profile? Or I can not imagine how it will load start to print and you will get it at some layers after?!?! Or maybe it is because you will need some time to eject it from the AMS, and because the printing stopped not gracefully, it develops it?
As there was many issues with the AMS 2 PRO bundled with X2D at some point. And Bambu shipped a lot of parts to fix them. But this looks a bit strange and you say it doe snot happen with Bambu rolls… I am using cardboard spools from the start from Polymaker but never had any issues with loading.
Maybe you can try to re-spool one on different spool and try again?
And maybe check if the spool somehow do not go out of rollers, the rollers are properly fit, and the spool does not stuck after some movement. I think direct feed will shed some lite if this is more of AMS or something else related.
I saw somewhere that sometimes cardboard spools could have different diameters on both side, maybe you can give your a roller from both sides to check it out?
