This came from my Bambu P1S, I did a hotend replacement a week ago and I only print simples models since. This time I tried to print a model a bit more complexe with supports and it failed. Filament is dry, ambiant humidity is 7% in the AMS.
Do you have any suggestions ? Thanks
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It needs more support sooner in the print. While it’s not a bed slinger, extrusion still puts torque on the print. Both from the pressure down of the plastic squishing ontop of the lower layers, and from the nozzle pulling along as it prints.
I’m actually surprised the print even made it that far. A model moving even a tiny bit can produce a lot more than just some wobblyness in the surface finish. I’ve had plenty of prints that basically just fall apart and become spaghetti without the models even detaching from the bed.
Check your bed adhesion (clean the bed with detergent and hot water, and I recommend a quick wipe with 91% IPA before each print) to prevent the model rotation seen in this picture, but in general parts with that little bed contact can be difficult to print correctly. If you can’t find an orientation that fits on the bed with more surface area, then slow the print down to minimize forces pushing the print. While supports help, they don’t hold onto the print as firmly as the bed does (on purpose).
I’ve run into some frustrating issues with small contact points with print beds. Another option is to use a smooth PEI plate and use a glue stick or Bed Weld or something to help improve adhesion.
Have you tuned/dried the filament? As others suggested, you may want to add additional supports and slow the printing speed down.
For records, this is the model in Freecad and how it is sliced in BambuStudio
I might be seeing it wrong, hard to tell from just this perspective, but could it be placed so the entire side, or entire back, is making contact with the bed? Increasing your contact surface can help dramatically as I said in my other reply.
@gdaofb27584 According to object rotation I don’t think it’s printing issue, but nozzle hit the model and rotated it
You are right ! I did a second try, with a different preset “0.08 High Quality”. It also failed.
The timelaps show the hotend hitting the model base. ( see this streamable ) It’s the first time it happens, I don’t know what to do to fix it 🤔
@gdaofb27584 The base need few supports, it’s not stable enough
The print itself looks pretty mint, apart from the failure. If you don’t have hot end leakage around the screws this looks like a design / orientation placement error
Did you check preview mode on slicer? Do you use your own settings? Is purge line always that long?
I use factory preset “0.2mm standard” for a 0.4mm hotend. The purge line looks normal to me. I had an other comment with bambustudio and freecad files.
Looking again at your pic and wonder if part tilted while printing due to small area on bed. If it did, adding manual support to the print would help to stabilise as it goes up. Only thing is, that doesn’t explain why there is filament on the right of the picture.