・When ABS is printed, the corners and edges of the molded product become jagged. (This does not occur with PLA.)
・The problem started around the end of November last year and has continued to the present. (P1S has been in use for approximately 3 months as of the end of November).
・We believe that this problem may be caused by the low temperature in Japan.
・We have built a room with insulation to enclose P1S, but it has not been effective.
・The P1S that we purchased additionally a week ago had a successful first print, but then the same symptoms started to appear.
I have been suffering from this problem for a long time.
If anyone knows of a solution, please let me know. Best regards.
I too am experiencing difficulties like this printing ABS on my P1S. From what i can remember my first print or two in ABS were quite nice. But quality has gone down.
I’m doing some of the Orca slicer built in filament calibration steps to optimize the print settings for ABS.
In addition i’ve noticed that my nozzle keeps getting dirty with filament and went to change it out for a hardened steel 0,4 nozzle.
I will let you know if any of this increases the print quality.
I signed up for the forum to post about this exact problem, degraded ABS print quality but PLA is fine. I tried using the stock 0.2mm profile, switching to Bambu studio, drying the filament, no change.
Then I remembered I recently upgraded my P1S’ firmware to the latest (01.07.00.00), so I tried downgrading.
01.06.01.02 had the same issue, but 01.05.02.00 is delivering great results again.
Here’s my before and after prints, sorry for using white filament. I hope this helps the rest of you, and if it does I think Bambu Lab needs to fix the firmware
This issue still there with 01.07.00.00 firmware. I tried slowing down Outer wall speed from 200 to 150mm/s; inner wall from 300 to 200mm/s; im using BambuLab ABS purple. Im trying out downgrading now. will use standard printing settings. I will leave a result later.
I was recently printing some new parts in ASA on my P1S for another of my printers and got an extremely ugly print the first time around with the same edge problems as others have been showing in this thread for ABS. Here’s what it looked like.
I’m using Bambu Lab ASA, so I just took the defaults for the filament to start with. That gives 270°C for printing temperature and some fairly mild cooling. I left these values unchanged.
I also calibrated the filament and ended up with some quite different values for PA and flow rate than the default profile for BL ASA. After calibration, I changed flow rate from .95 to .97 and PA from 0.04 to 0.015.
As my machine is the P1S, I can’t control chamber temperature, but I pre-heat the chamber before printing by setting the bed to 100°C and waiting 20 minutes or so before starting the print.
After the print has finished, I keep the door to the chamber closed and let the print cool down very slowly to 35°C before opening the door.
These are just guesses, as you say. Watching the temperature of the inactive hot end as the chamber is heating works just as well as adding a thermometer to the chamber. The hot end reaches around 45°C before starting the print by letting the machine warm up with a 100°C bed.
In the end, I turned off scarf seams and the corner artefacts were eliminated. I don’t understand why you would suggest changes to printing speed and cooling when I didn’t need to change these parameters to get rid of the problem.
I’ve gone through at least 30 rolls of ABS last year but never had this problem. But my setup is a bit different: P1S inside insulated enclosure, with fully temperature and humidity monitor inside and outside. Never had to heat soak the chamber before print. And I am not using BBL filament.
Anyhow, since it works for you, just ignore my post then.
At first glance:Pretty sure it’s retraction and or hop. I assume the seam is there where it’s occurring? Look at the Preview in Bambu Studio, you should see white where the seam is.
Looking further, is your XY squishy? Belts loose? Though it should be all corners then.
I would carefully look at the gcode preview, or the belts… Does look like a fair amount of shifting between layers. Maybe overextrusion as well?
Hi guys, I print ABS on daily bases in my p1s with 01.07.00.00 firmware.
Conditional scarf seam is no problem at all - be sure to tick the box for "conditional Scarf seam. In this way it only use scarf seams when the print have radial surfaces.
Also remember to switch off Wipe because it does not work well with scarf seams.
And I use 0-10% cooling maximum.
