Hi,
One part detaches from the built plate. It even break from a 15mm brim ( 0.0mm space between brim and part).
Cleaned the PEI textured plate and now again at the same place the part detaches.
Any solutions ?
Material? Dimensions? Temperatures? Too little information to work with. Some general advice:
- Try different orientation on the build plate, left side is where the fan blows, maybe it cooled the part down too much.
- Try different type of the build plate. Sometimes engineering plate works better than textured PEI.
- According to my experience, expanding the brim anywhere over 6mm doesn’t make any difference. If it doesn’t stick, it doesn’t stick.
- Use a glue (or different glue)
- Higher temperature on the bed
- (If possible) Divide the part into several smaller pieces, then glue them together
Material: PLA Basic
Temps: nozzle 220, bed 55, cabine 37
Dimentions: 100x150x200
Brim is sticks to the builtplate but the part not.
I will try the orentation first
Don’t use the aux fan on large prints. The bit closer to the aux fan often cools and lifts. Could be your issue?
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Can i just turn off this fan without other problem?
Sure, you can turn it off in the filament settings in BS or once the print starts, set it to 0 on the control screen.
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I just use the cool plate after struggling with large prints deforming on a textured plate. I never use textured plate with PLA anymore. It’s not worth losing a ton of materials on a bad print.
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I found that the aux fan kept coming on when printing a multi color print. I stuck some blue tape across the top of the fan outlet as a diverter, in now blows under the build plate for maybe the first 10mm. And after that, it still does not blow directly at the part until it’s way down.
I agree with the comment about turning off the aux fan.
You can also reduce the distance between the brim and the part. There is a gap by default which makes it easier to remove the brim after print is complete. If you remove the gap there will be less chance of the part and brim separating during the print.
And now I look at your photo. You shouldn’t need a brim at all with that part. The aux fan does that on the left side of large objects. I had it happen many times before I just turned off the aux fan completely for PLA.
Up your build plate temp. Clean with IPA. Agree with reducing cooling. Your walls are cooling too fast and pulling the print up.
Odd to me with people having prints lift from PEI. I’ve tried to pop finished parts while still printing and it is near impossible without causing a Z shift issue. They just won’t let go until plate cools.
Did a large print last night without the aux fan had no problems wit this print so it seems that was the AUX fan was the problem.
Thanks everyone
The aux fan also causes problems for tall thin prints because it can blow hard enough to make them bend and shift layers.
I didn’t see it above, but you can turn off the aux fan in the filament settings, so it is never used for PLA.
How can this gap be reduced? I can not find it as a parameter in the slicer…
Tab others, bed adhesion, brom-object gap.
(Bottom one in the picture)
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For some reason this does not show up in my slicer (1.5.0.61)…
You are on a old version download the new version 1.6.2.4 or Orca slicer
Bambu Studio has release several versions since you installed. The latest is 1.6.2.4.
Brim-object gap still does not show up with the latest release, at least not when I manually want it to make a brim. Maybe it just is an option if the brim type is in auto mode and the slicer have decided that a brim is necessary? I’m trying to attach a screenshot to this post, but that does not work either. Maybe I’m getting too old for this 
Ya you have to go to manual mode the auto mode will not work sometimes depending on the part design.
The slicer needs the human brain 
Sample:
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