Good evening, I’m having a minor printing issue that I’ve never encountered before.
Bambulab P1S, 1000 hours of printing.
Model printed 3 times and the same error in the same place.
Could it be a speed issue? 200mm/s?
Kingroon Black PLA Filament
Thank you.
Model: Uno Slide Box by GRATiAN MakerWorld: Download Free 3D Models
try rotating the model 90-180° on the z-axis (the blue one – you probably know that but --) and printing again if you just wanna do something without like, calibrating and tightening and all that nonsense. itll tell you if its an issue with the model/slicer or if its an issue with your machine.
how’s your ptfe tubes? if they’re getting roughed up the filament could be getting stuck on a kink or something and causing the printer to struggle when the extruder works in that corner/position.
Thanks for responding. I tried other models and the same error occurs.
I think it must be the Z axis, so I’ll lubricate it well. I haven’t lubricated it in 500 hours.
It’s calibrated, as are the temperature and flow rate.
If it’s not the Z axis, I’ll try replacing the nozzle, although with 1,000 hours it shouldn’t be damaged yet, so I’ll check everything.
I’ll also perform maintenance just in case.
That spot is likely where aux fan blows and print direction changed. Adjust aux speed and see the change.
Slow down print speed should help as well.
Is it always in the same corner of the model and/or the same corner of the build plate? If the latter, it may be that your print is experiencing a draft. The Aux-fan, door hinge and poop chute areas are known to be able to create local draft effects.
Part of my usual troubleshooting is to slow down. More often than not, that already fixes a lot of issues.
Good afternoon, after doing some maintenance, the errors have been reduced.
The ventilation isn’t the culprit; I think it’s the speed.
I printed a similar model, and now the error doesn’t appear in the south-left corner, but in the north-left corner…quite curious.
This had never happened to me before.
I did general maintenance on everything, even the belt tension, just in case.
I’ll continue testing, lowering the speed a bit in the corners with a modifier.
That shift in location is quite curious.
The latest defects occuring at the corner do however remind me of mild curling.
Do you monitor your chamber temp? If not, those cheap thermo/hygrometers can be quite useful in the P1 for that purpose. There are holders on MakerWorld that enable a monitoring through the camera. On my X1, I target 35-39°C without ironing, <=35°C with ironing to counter warping and curling by adjusting the lid closure gap. Higher chamber temps risk heat creep.
Further effective anti-curling methods are speed and layer height reductions. If a warm(er) chamber does not do it on its own, reduce speed and/or layer height by 25-50%.
Most importantly however, give the filament some time in the drier. Curling is my first indicator of filament moisture. And especially new filament is frequently moist.
& 
It seems like the filament cold be wet in those spots due to poor layer adhesion but it’s just in that spot. It could be that your hot end is worn out
I might replace the extruder and nozzle with hardened ones and test it.
I don’t have many other options. After performing the maintenance and seeing that everything is fine… there’s no other option in my opinion.
I’ll keep you posted. Thanks everyone.
It wouldn’t hurt to calibrate pressure advance and flow ratio.
I was just doing it right now, what a coincidence. 
Hard to tell from the pics. The left in the middle row and the middle of the bottom row look decent.
Okay… I’ve found the problem… well, you won’t believe it… it turns out that when I synced the colors, the print profile remained at the original speed I had uploaded… and of course, it didn’t match my filament. I don’t know why this happened.
Imagine, for example, that the speed of the Bambu PLA basic was 220 mm/s… well, on mine, to get it right, it was like 150 mm/s…
I found it by chance; I even changed the extruder and everything.
When you sync the colors, you don’t expect that to happen. Honestly, I miss everything very much. It’s printing correctly again.
It took a while, but it’s finally fixed.
Thank you all so much for the help. Very grateful.
This topic was automatically closed 2 days after the last reply. New replies are no longer allowed.
