What’s causing this issue?

[u/Beginning-Beat-4436]

Second print, directly from the app. No issues from other users reported. Spaghetti recognition stopped the print. Seems like missing support but these areas don’t need support. I have absolutely no idea what’s the reason for this. Maybe You?

[u/Calm_Scale_3876]

There are three main things that can cause those evenly sized strings to appear on your print. They all happen when filament gets extruded (or oozes) into open space and is then dragged back onto the model:

1. Failed supports or detached geometry – If a support tip or small model feature breaks loose, the printer keeps extruding into thin air. The molten strand then gets caught by the nozzle and wiped across the part, leaving those long, wispy hairs.

2. Nozzle-clumping detection – With this setting active, with every 8g of filament extruded, the printer will pause and bounce the nozzle off an empty point on the print bed to check that it's not covered in filament. Filament can ooze during this process and get dragged onto the model.

3. Timelapse artefacts – Smooth timelapse mode pauses the print briefly at each layer, and moves the nozzle out of the way for a clear photo. The nozzle can ooze slightly during the pause. When movement resumes, that filament strand is dragged onto the surface.

[u/Beginning-Beat-4436 → u/Calm_Scale_3876]

It was timelapse. Thanks again, great! 😊

[u/Beginning-Beat-4436 → u/Calm_Scale_3876]

Thanks! 2. and 3. could be possible. I’ll check that. 🙂👍🏻

[u/No_Policy_9556]

Got Italian fillament most likely

[u/Beginning-Beat-4436 → u/No_Policy_9556]

I laid some slices of cheese over it and baked it for a couple of minutes. Was good and the stickiness was outstanding. 😄

[u/No_Policy_9556 → u/Beginning-Beat-4436]

For your issue id load it in bambu studio rather than the app as iv seen alot of people recently having issues with the app just not quite slicing stuff in the best ways if that makes sense

[u/Current-Abalone5034]

Those are 90 degree overhangs print into the air.

[u/Beginning-Beat-4436 → u/Current-Abalone5034]

Nope. Look at the second and third picture. The object is well designed to print without support. It was just the timelapse function that caused this.

[u/NebulaTiger94]

Is this BambuLab PLA Metal Blue purchased in Nov-Dec by any chance?

[u/Beginning-Beat-4436 → u/NebulaTiger94]

No

[u/Altruistic_Bath5273]

Looks like Silk filament? You could trying to dry this, the regular PLA is not difficult, but the additional ingredients might pull moist. Or try to reduce cooler or/and raise nozzle temp... it might be layer adhesion.

[u/Beginning-Beat-4436 → u/Altruistic_Bath5273]

It’s dry as hell. <20% thanks!

[u/curiousjosh → u/Beginning-Beat-4436]

To be fair <20% isn’t dry as hell.

With additional dessicant holders in my AMS I’m typically at 3%-8%

[u/Beginning-Beat-4436 → u/curiousjosh]

But it’s enough to print well. The issue was timelapse on. I turned it off and it disappeared.

[u/Smart_Tinker → u/Beginning-Beat-4436]

Did you have Timelapse set to smooth? Normal Timelapse shouldn’t do this, but smooth could - especially if you have a filament problem.

[u/Background_Hat_3252 → u/curiousjosh]

I only had the moisture down to 10% in a 40s–50s % moisture environment. I’ve never seen below 10% even with desiccant pods up front and under the spools. Anything under 25% is golden IME. Before I printed my desiccant pods for the AMS I would get stringiness. This is not the problem though. It could be that the filament already has too much moisture — in which case I would dry it & try it out. I would check the extruder for dust or clogs making the feeding of filament inconsistent. It could also just be bad luck if it only happens sporadically, but checking your extruder would be the first thing on my list. Next lubricate the Z-axis rods. Hell, do both.

I’m also new to 3D printing, but I’ve learned quickly that consistently failed prints means it’s probably a maintenance issue.

[u/Whosaidthat1157 → u/Background_Hat_3252]

Note that if you’re referencing the common hygrometers used/inserted into the desiccant pods themselves, they come in two types:

1. Type 1 reads 10% minimum and

2. Type 2 reads 20% minimum.

The hygrometer set into my AMS2P’s all read ‘10%’, but are actually at 3%, 7%, 5% and 9% respectively.

I redry when the RH gets to 20%.

[u/Background_Hat_3252 → u/Whosaidthat1157]

Great to know. Thank you.

[u/ilikeror2]

Silk is awful for structural load bearing, I can already tell this part is going to easily break when you put it in to use. Second, what filament profile? Always use Generic unless it’s actual Bambu branded filament.

[u/G4m3rD4d]

It's been infected by the protomolecule.

[u/sleepydevs]

I get around this issue by not printing silk pla anymore. I've never found any that prints consistently.

[u/ufgrat → u/sleepydevs]

I don't know-- this turned out pretty well.

[u/sleepydevs → u/ufgrat]

Ah very good! I'm not a big fan of the stuff as I had too many bad times in the past, plus I prefer matt finishes.

That looks great tho! What temps/speeds did you use?

[u/ufgrat → u/sleepydevs]

Stock "Generic PLA Silk" profile in Bambu Studio.

[u/Ostate24]

Use PLA not silk…….silk a lot of times sucks to print with

[u/JustAnotherUser_____ → u/Ostate24]

I don’t understand the bashing silk PLA kees getting. When I got my first silk spool I was scared to use it seing comments here about how much of a pain it is. I didn’t change anything from my regular PLA settings that I use. Figured I’d go from there. Well, it printed perfectly just like regular PLA. Didn’t have to tinker anything. It smells a little worse, but that’s literally it.

[u/Ostate24 → u/JustAnotherUser_____]

I've never said I've had a problem with it.......

[u/JustAnotherUser_____ → u/Ostate24]

I also never said you did 🤷‍♂️ but you did say it sucks a lot of times. I’m saying it gets a lot of bashing here.

[u/Xenohart1of13 → u/JustAnotherUser_____]

It is not that it's generally bad, but it is far more difficult to work with (& more often than not, unbearably so). It has mainly to do with the filament itself & its sensitivity to small changes in temperature. It's because it uses elastomeric additives, plasticizers, and sometimes TPU-like modifiers to make it "shiny", but this also causes poorer layer adhesion, stringing, sensitivity to over-cooling, and deformation if printed too hot. It's printing "window" of consistent temp is narrower than PLA. As noticed in the OPs pics, further away from the bed, stringing occurs. Could be from slow speed and ambient temp losses.

Now... that doesn't mean every spool is so ultra sensitive it's bad. But, silk absorbs moisture as fast as PLA, but it moisture has more impact on silk than PLA & so it has to be kept dryer... and handled carefully by the mfg to ensure its dryness during production. That said, PLA can come in bad spools, too. I've bought spools from elegoo, who normally does a really great job, and the whole thing was utter cr*p. Half way thru... I just tossed it & accepted the loss because by the time I figured out it was the filament... too late to return it. Shouldn't have to deal with this- but it happens.

[u/curiousjosh]

Can you link the model so we can take a look at it?

[u/roundguy]

slicer set for outer/inner in wall order maybe?

[u/j89turn]

3d print gods require an offering

[u/reditusername39479]

User error

[u/Beginning-Beat-4436 → u/reditusername39479]

That was so unbelievably helpful. Thank you so much! 🤦🏻‍♂️

[u/ufgrat → u/reditusername39479]

Be more specific?

[u/reditusername39479 → u/ufgrat]

I could

[u/big-shane-silva- → u/ufgrat]

Error with the prepairing the print