Hi, I have this issue and don’t know how to google for it or how to solve it. Maybe someone can help me with that?
Not sure about the orientation of this but could it be overhangs?
This is the print orientation. The issue is only on the left and the right side but not at the middle.
these are Overhangs and it depends on which settings your have set it. On 0.2 this kind of blows shouldn’t happen even on 100% speed. I have printed something similar with octagons which have an even steeper angle and don’t have this blobs. But if I print it on 0.28 Draft to save time then I get it because the layer height is to high in comparison to the overhang length.
what you could try is lowering the layer height or changing the angle of the geometry, Support could also help.
Hello Lars,
Could you upload some screenshots from the sliced model?
Make sure to tick:
- Retract
- Unretract
- Wipe
- Seams
on the list on the right, so we can see if this is only an overhang issue or something else.
(Btw hol dir Orca Slicer, viel mehr lässt sich dort feinstellen)
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Hi,
I am using the BambuLab Basic PLA for the print and the 0.20mm Standard @BBL X1C preset. Everything is set to default except the settings in the screenshot.
I also figured out that the Seam setting had a huge impact on the problem. I also could see that the sliced model shows the seam exactly at the position where the issue occurred. By setting it to random, the main problem went away, but the now the surface of the print is less smooth.
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Good job figuring out the seam is the problem!
Suggestion: draw seem by hand down the center of a spiral. Make the brush as small as possible. Don’t worry about precision as long as brush doesn’t touch border of the spiral.
Best,
Stu
Nice, so the problem is located at the seam.
Generally, seams are always going to be visible, however they can be tuned.
draw seem by hand down the center of a spiral.
This is a good suggestion by @Stu, if you are up for the challenge you can tune the seam settings a bit as well. This will not only be beneficial for this model but every print you do with this filament!
Reducing speeds a bit can help as well, and changing retraction settings, the Z-hop movement pattern and the wipe settings would definitely help you in this case. Begin with the values provided by your preset Bambu profile and make changes from there.
This takes test prints and work, so if you feel like it’s not worth it, just
- reduce speeds!
- play around with the seam painter as suggested by @Stu
- maybe try lower layer heights
- make sure the Flow Calibration is turned on when starting the print and turn the lights off in the room and on the printer until it is done scanning with the LIDAR (this will only work with the Cool Plate!)
If you decide that the results are not good enough or seams just annoy you way too much, when tuning, especially for a print, make sure to print only the part of the model where the issue is most pronounced, this will cut your filament and time wasted significantly!
Happy printing!
Thanks, @Stu and @Balint for your hints. I even didn’t know that I can draw the seam. I played a bit around with it, and it is better, but not perfect. Furthermore, I guess I can live with the current results. It is not worth to spend more time in optimizing the print. But I learned a lot for future prints. 
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