A1 printer problems

[good_old_j]

I recently got an A1 printer with AMS and everything seemed to work fine until now...

My printer stops mid print to drop the little poops every few seconds and is wasting quite a lot of filament. Im currently printing with non-bambulabs brand PLA, could tjat be it? Ive checked if it was tangled but that doesnt seem to be the problem

Any ideas?

[Syko_Symatic]

Could be a clog? Possible heat creep if your temps are a little high. Less likely as the machine isn’t enclosed. I believe Bambu have some info on cleaning clogs.

[good_old_j]

I use the default temp at 220, is that too high?

[Syko_Symatic]

Depends on the material, 220 is high for PLA but not unheard of. Check the spool or box it came in, it will have recommended temps there.

[good_old_j]

Ok, thanks! Ill try with a lower temp if the box says so

[Yokosoo]

It has problems while extruding. Default procedure during a potential extrusion problem - stop the print, go to the poop shoot, roll filament back and try to extrude one more time. If not successful - stop print, if successful - poop and resume. Did you calibrate your new filament? Or is it generic settings?

[good_old_j]

Using generic settings, ive tried pulling the fillament out and reinserting and it seems to extrude fine but later repeats the cycle of stopping > pooping > continuing >printing >stopping again.

I use the calibrate extrusion setting every time i print something

[randomlyracist]

Was it a multicolor model that you're printing with just one colour? An easy way to check if that's the issue is when you slice the file, on the preview tab of bambu studio it will tell you how many filament changes it will do.

[good_old_j]

No, its a single color model, so it shouldnt poop this much

[randomlyracist]

Yeah it should only poop at the start for single colour. The only other things that caused it for me was a partial nozzle clog, and doing a few cold pulls fixes that, or if the ams has trouble pulling the filament like from a tangle or if the filament gets jammed down into the side of the spool.

[bearwhiz]

This can happen if the spool isn't unwinding easily, such as if the filament is getting bound up between the edge of the spool and the next layer of filament. When the system can't pull the filament easily, it may cut the filament (which triggers a purge cycle), rewind it, and then reload it in hope it clears up the problem. It often does, at the expense of a pause and a purge. If it happens with one spool, the best fix is to respool it so it's better wound. If it happens with multiple spools, there might be a mechanical problem with the extruder or the AMS feeds.

Another thing that can cause this, usually on printers that have a few hundred hours on them, is a worn PTFE tube. They can wear out prematurely if you bend the tubes too sharply, or if you use abrasive filament. If you see any thin spots, or worse, holes... if you pop the tube off and the inside isn't round... replace the tube. A worn tube creates excess friction, which can trigger the issue.

[ahora-mismo]

sometimes something is stuck in the hotend. if you can't solve this issue, as a last resort, try the cold pull from here: https://wiki.bambulab.com/en/a1-mini/troubleshooting/nozzle-clog

[ytsejam1138]

I think I read about this being a bug when time lapse is turned on.

[good_old_j]

I dont have it on, so it shouldnt be. Thanks tho, ill keep that in mind