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
paf
in reply to gdaofb27584 • • •Is purge line always that long?
gdaofb27584
in reply to paf • • •I had an other comment with bambustudio and freecad files.
paf
in reply to gdaofb27584 • • •Only thing is, that doesn't explain why there is filament on the right of the picture.
gdaofb27584
in reply to gdaofb27584 • • •Schmaker
in reply to gdaofb27584 • •3DPrinting reshared this.
gdaofb27584
in reply to Schmaker • • •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 🤔
Watch video_2025-07-31_15-09-10 | Streamable
Streamablelike this
Schmaker likes this.
Schmaker
in reply to gdaofb27584 • •3DPrinting reshared this.
TheRealKuni
in reply to gdaofb27584 • • •Applesauce
in reply to gdaofb27584 • • •Taleya
in reply to gdaofb27584 • • •TheRealKuni
in reply to gdaofb27584 • • •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.
MotoAsh
in reply to gdaofb27584 • • •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.
like this
Schmaker likes this.