Common Problems
Troubleshooting websites
https://www.simplify3d.com/resources/print-quality-troubleshooting/
https://bitfab.io/blog/3d-printing-problems/
https://realvisiononline.com/blog/the-12-most-common-problems-in-3d-printing-and-how-to-fix-them
It is possible for the printhead to crash into the print, this can result in the belts for the x and y axis to slip which results in shifted layers. This can also cause the front of the printhead to fall off. See the images below.
Layer shift after a crash of the printhead
Luckily the front of the printhead can be reattached easily as it is held in place by magnets. Just pick up the front, make sure the letters on the front are readable (not upside down) and place it back on the printhead.
Although reattaching the front of the printhead is easy, preventing the crash is better.
Loose front of the printhead
The image below indicates why this particular crash happened. During the print a part of the model toppled over (see the black arrow) causing one side of the model to stick higher up than it should. After toppling over the hot nozzle crased into the side of the model that is now higher than it should be. This caused skips of the belts for the x and y axis and the hotend melted into the side of the model as well.
Place where the crash happened. Inside the the dashed box there are three clear places where the hotend touched the side of the model. This caused the part to fall down (black arrow). Problems like this can be prevented by placing supports under the model at the side indicated with a red triangle.
This problem can be prevented by generating supports underneath the model at the place that is indicated with the red triangle. In order to generate supports there you will have to increase the value of the ‘Threshold angle’ parameter in the Support tab of the slicer. In this particular case increasing it to 25% solved the issue.
Threashold angle setting in Bambu Studio