Guys I need your help please.
I print this trophy at 50% speed with support tree.what is the problem?
I have Bambu lab a1 mini.
The nozzle was sure 220 and bed 65 if I remember.
The “noise” or the “temperature” ?
the noise’s temperature was 220
I believe you meant to say “nozzle” temperature, not “noise”
The difference between them being what each means:
Nozzle = the physical part of a 3D printer
r esponsible for extruding the material onto the build plate layer by layer.
Noise = a sound, especially one that is loud and unpleasant/disturbing
haha yes im sorry, i mean nozzle
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Does that need supports? It looks like it shouldn’t. Can you include a picture of the slice with and without supports?
From the pic, I tend to agree with @cabanamd that this does not look like it needs support.
Before going deeper, there’s the usual: Dry filament? Calibrated?
If yes, did you observe that section of the print? That usually gives good indications as to what specifically is going wrong.
With tiny stems, local curling can become an issue, especially with low layer times. A lower local layer height using adaptive layers and/or speed reduction can help. However, there’s a rare case where the material has insufficient cooling time if the layer time is too low, but slowing down will actually increase the part contact time with the hot nozzle. In such cases, make sure to use a prime tower and/or print two copies on the same plate. That forces the nozzle out of the way, enabling sufficient cooling. Rare case, but the pic fits the onset of the failure case.
Pictures of the slice and settings would be quite helpful in trying to dig deeper.
Hi and welcome.
Rotate it 180 degrees so that the larger surface is on top. Are there still problems then? With this shape, you should actually be able to ignore the warning.
The warning is overly conservative. Filp it 180 and print without supports
Many thanks for the screenshots. That does help somewhat.
Indeed I agree with @Haase0815 and @cabanamd that this should be printable without supports. The overhangs may have small defects, but they should not be overly bad.
Turning it upside down will not eliminate the warning, but you’ll get a more stable print. It is top heavy in the current orientiation, but again, with good plate cleaning it should be OK.
What has me worried is your first picture.
In the current orientation, the support interfaces are above the major defect location. So they are printed before the actual supported overhang. So support or no support is probably not actually the main question.
There is a case where a number of small features printed with low layer times can lead to curling. But since there are a large number of pillars and you tried this with support (increasing layer time while keeping the hot nozzle away from the part), this is a bit borderline. Tell me, did you dry the filament? Moist filament is significantly more prone to stringing and curling. If you have not dried, doing so could significantly expand your process window for this type of geometry.
PS: Just in case you did dry: The next steps would be to either increase layer time (enforce Prime Tower, print two trophies simultaneously or just add a primitive as tall as the pillared section), or to decrease heat input not by reducing temps, but by reducing either print speed in the critical section or using adaptive layer height (right clicking on the bar for local layer height decrease, left clicking for increase).
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Just be aware that printing overhangs that are round/curved in shape are much more difficult than traditional bridging between two straight points. This is probably why the error was generated? There are sections of the overhang that are not considered a bridge as they have multiple line segments.
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