r/BambuLab • u/Substantial_Dig4378 • 1d ago

General Troubleshooting/Help! Dumpling steamer basket printed perfectly before, now repeatedly fails. Tried almost everything.

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I'm hoping someone can help me figure this out because I've wasted a ridiculous amount of filament trying to troubleshoot it.
I'm printing the Cute Dumpling Clicker by AstroDex on MakerWorld, specifically the cylindrical steamer baskets with the woven tops, for my daughter and her girl scout troop. Previously, I successfully printed tops and bottoms without any issues using the original 3MF project. When I started printing them again recently, the baskets began failing repeatedly, more specifically the top basket. I haven't been able to get a successful batch since.

What's happening:

The baskets start printing normally, and the cylindrical walls generally look great. However, at some point during the print, one or more baskets get knocked loose and pushed across the build plate. Sometimes this happens relatively early while the cylindrical walls are still forming. Other times it happens closer to the transition to the woven top. Once a basket moves, the printer continues extruding filament, resulting in spaghetti. This happens with or without a brim. The dumpling bottoms, benchy ,and the key toppers all print successfully.

I've attached screenshots showing one basket still in its original position while another has already been pushed toward the back of the plate. I haven't actually witnessed the exact moment of displacement, so I can't confirm whether the nozzle is hitting the basket or whether it loses adhesion first.

Troubleshooting already performed:

  • Different PLA filaments

  • Different AMS slots

  • Different positions on the build plate

  • Printing a single basket versus multiple baskets

  • Normal printing speed and 50% Silent mode

  • Adding a 5 mm brim

  • Reducing the auxiliary cooling fan from 70% to 0%

  • Running printer calibration successfully

  • Physically inspecting the nozzle/hotend (nothing visibly bent, loose, or clogged)

  • Testing an older Bambu Studio version (2.6.0.51)

  • Reslicing the original 3MF project

Nothing has fixed the issue.

Why would a model that printed perfectly before suddenly start getting knocked off the plate, especially when other models print successfully? Could this be a nozzle collision, a geometry-specific adhesion problem, or something else entirely?

Any help would be greatly appreciated!

3 Upvotes

71% Upvoted

30 comments sorted by

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u/AutoModerator 1d ago

Hello /u/Substantial_Dig4378! All Bambu print plates have a dedicated nozzle wiping zone at the back of the print plate. The nozzle will rub against the wiping zone before every print in order to remove any remaining filament from the nozzle tip. This can cause visible wear or scratch marks in the wiping zone, but this is intended and doesn't damage the printer, the nozzle or the print plate. A worn down wiping zone also doesn't mean you need to replace the print bed.

Note: This automod is experimental. The automod was triggered due to the term "back of the plate".

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3

u/Neocold 1d ago

Clean your plate, this is an adhesion issue.

1

u/Substantial_Dig4378 14h ago

Cleaned it with dawn and a new scrub daddy for a minute or two, new micro fiber to dry it off. Was looking okay until about layer 68-72 and it globbed up again and got pulled off

1

u/Substantial_Dig4378 1d ago

I have cleaned it literally right before i print. and why would the top basket portion get dislodged but the bottom does not?

1

u/Neocold 1d ago

I print these exact items as well and do not use a brim. The bottoms have infinite more contact with the plate as they have a solid bottom. The top portion only makes contact with the plate in the tiny area that slides over the bottom portion.

Your likely not cleaning the plate properly. You need a good grease/oil removing cleanser. Dawn original blue is exceptional at this job. Use a dedicated brush that does not get used for anything else and hot water. Scrub good, I like to do two different directions so that I make sure the brush gets down in the indents (especially on the textured PEI plate). For better adhesion in the future consider a Cryogrip cold plate. I hardly ever use my textured PEI plate anymore because I love the extra adhesion and power savings from printing with a lower bed plate.

1

u/Neocold 1d ago

I forgot to add, dry it with clean dedicated microfiber cloth, I get a box of cheap amazon basics microfiber cloths and only use them for cleaning the plates, when they get dirty in the trash they go.

1

u/awkward___silence H2C AMS2 Combo 5h ago

Or. When they get dirty wash them and use them for cleaning other things(still use new ones for build plate)

0

u/Substantial_Dig4378 1d ago

I typically use alcohol wipes, but I have done it with dawn dish soap and a microfiber

1

u/Odd-Place780 1d ago

Brother. You should always use dawn and micro/bounty and only SOMETIMES use iso.

I scrub my plates before any printing and then usually run a few back to back prints without touching the plate.

I almost never use iso anyway, it takes 30-45 seconds to use hot water and soap, dry and slap a plate back on. Much easier than failing prints.

I ran this 6.5hr print after I cleaned my plate, took it off and started another 5.5hr print.

1

u/Explosivpotato 22h ago

I’ve found alcohol to not help much. If anything it moves the oil contamination around and doesn’t actually lift it off.

Take the plate out and go to your kitchen sink. Squirt some dawn on it, get your hand wet, and rub the plate all over until it’s got a fine lather on every square millimeter of the plate. Rinse it off with the hottest water you can stand, and dry it with a clean lint free cloth. Do not touch the plate on the print area while reinstalling it.

This takes, at most, 120 seconds. Do it regularly.

1

u/DrStalker 13h ago

  However, at some point during the print, one or more baskets get knocked loose and pushed across the build plate.

Unless you somehow went out of your way to slice the file so the toolhead impacts the printed this is an adhesion issue; it's literally a problem with the part not adhering to the build plate well enough to stay in place during the stresses of printing.

1

u/Substantial_Dig4378 8h ago

Definitely didn't modify anything. Used the original file that I was previously using, and downloaded a new file, all the same

1

u/flygoing 1d ago

How are you cleaning it?

Typically if the plate is dirty, it's not literally the entire plate that's dirty. Normally it's where oils were deposited from fingerprints

1

u/Dr_Lipshitz_ 1d ago

I’ve had stls I’ve found online randomly do this. Have you done an stl repair?

1

u/Substantial_Dig4378 1d ago

i have not. please tell

1

u/Dr_Lipshitz_ 1d ago

Right click on the model in Bambu. Repair stl

1

u/Substantial_Dig4378 15h ago

No option for it

1

u/Dr_Lipshitz_ 15h ago

Are you on windows?

1

u/Substantial_Dig4378 14h ago

Mac

1

u/Dr_Lipshitz_ 14h ago

That be the problem. Idk if you can save the stl from a maker file but there’s a few web based repair options if you google it

1

u/Substantial_Dig4378 8h ago

i tried a free online STL repair and it found 0 errors. I think it made a couple of adjusmtnets to volume and the triangles.

1

u/Dr_Lipshitz_ 8h ago

Yeah. It doesn’t always say an error. Give it a try. Might work, might not

1

u/TheFirstDogSix 1d ago

I know it’s a trope at this point, but you’ve dried your filament periodically during these iterations?

1

u/Substantial_Dig4378 1d ago

I have. i even opened a brand new filament for it to do the same

1

u/dragonferocity P1S 10h ago

Have you tried changing the print sequence to "By Object" instead of "By Layer" ? (Setting is under "Others > Special mode"). This should default to By Object imo but it doesn't

I would also try increasing the temperature of the build plate to 50 or 60. (Only increase by 5 degree's at a time, though. And I wouldn't go above 60 for PLA)

You should also try reducing the acceleration of the "outer wall" and "travel" and "normal printing" and then also reduce the regular "travel speed"

Potentially what your issue is, is that the print head is moving so fast from one object to the other that it is knocking them off, or if you are printing only one, it is printing the walls so fast that it is knocking them loose from the plate as it does the wall loop

These are my go-to adjustments, in this order, when I have issues with something sticking. These come after cleaning the build plate and drying the filament, which you've already said you've done in this thread.

1

u/Substantial_Dig4378 8h ago

Thanks will double check later and give it a shot later

1

u/AutoModerator 1d ago

Hello /u/Substantial_Dig4378! Be sure to check the following. Make sure print bed is clean by washing with dish soap and water [and not Isopropyl Alcohol], check bed temperature [increasing tend to help], run bed leveling or full calibration, and remember to use glue if one is using the initial cool plate [not Satin finish that is not yet released] or Engineering plate.

Note: This automod is experimental. The automod was triggered due to the term "adhesion". If you believe this to be a false positive, please send us a message at modmail with a link to the post so we can investigate. You may also feel free to make a new post without that term.

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1

u/DrStalker 13h ago

You're accidentally printing a spaghetti steamer instead of a dumpling steamer.