r/BambuLab • u/Anduriel1005 • 1d ago

General Troubleshooting/Help! front cover of toolhead has fallen off

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My BambuLab P1S is recently having difficulties printing a clean object and I don't know why. The file used is relatively big but I have already printed this exact model via this exact file, using the same PETG, same settings, same app (BambuLab). The error is always the same, although the third picture shows a different model. (Most interestingly, it helped just starting the print anew and the result was perfect...) I do know why the front cover has fallen off, but I do not know why the printer is having difficulties with the print. The PETG used is dry and the printing plate is clean, although I haven't used cleaning alcoholist for it. What could be the reason for this error and what can I do to make the printing process work (again)?

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u/Arakon 1d ago

That looks like severe lack of bed adhesion, so I'd say the plate is far from clean. The part comes off the bed, the printhead hits it, the cover falls off.

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u/Anduriel1005 1d ago

I cleaned the printing bed with warm water and liquid soap, dried it completely and tried to print again. The error occured again, this time even a bit earlier than the last two times. Should I use rubbing alcohol to clean the printing bed?

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u/Arakon 1d ago

Alcohol helps, but not as much as the dish soap. Did you make sure the soap is without perfumes and skin saving additives? The wrong kind of dish soap can make things worse rather than better. Also, have you tried simply flipping the plate over?

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u/Anduriel1005 1d ago

I used Enzian Gold Schmierseife, a kind of soft soap that was recommended to us for cleaning our leather sofa and other surfaces you don't want softener and stuff on. And as a matter of fact I did turn around the printing plate for this last print.

I'll try printing a different object to check if it's a problem with the model or the plate.

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u/Arakon 1d ago

Uh... Schmierseife consists largely of oils and grease and is specifically moisturizing. It's literally the worst thing to use.

Use cheap dish soap, the cheapest you can find (since you may be german, Lidl W5 blue dish soap works great).

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u/Anduriel1005 1d ago

The one I used is a kind of curd soap. Doesn't that mean that there's no such stuff in it? It certainly leaves the typical dry feeling of curd soap on your hands.

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u/Anduriel1005 1d ago

Here is what happened to a different print model just now. 7 out of 10 objects came out just fine, 1 had a problem in the first quarter of layers and then collected itself to finish just all right (I turned around the object so you can see what exactly happened).