It continues to move the head in its previous pattern, but now everything has shifted a few millimeters to the left. The printer has no way of knowing that the print head shifted a few extra millimeters to the left. Things are going smoothly, but then you accidentally bump into the printer, joggling the print head a bit. It will continue to print as though nothing had happened, which will result in layer shifting. The 3D printer moves the printhead according to the directions it receives from the slicer software, but if something occurs to interrupt or alter this motion, the printer has no way of knowing. In short, layer shifting occurs because 3D printers do not have a feedback system. Once you understand that layer shifting is an execution problem, it is a straightforward path to deducing that the problem must lie in the printer itself. If your 3D models have misaligned layers in the computer, then you have a different problem. Layer shifting is when the printer misaligns even when the instructions given to it are correct. If you want to know you to properly deal with layer shifting, you must realize that layer shifting refers to a problem with the execution of the print, not the model. Either way, layer shifting is always noticeable and will ruin your 3D print.

It could cause the entire object to collapse, or it could only ruin the look.

The shift between the layers can be a massive gap or just a few millimeters. It can occur throughout the print or only in a few spots. Know that the severity of layer shifting can vary. Your printed object will have misaligned layers that look like a staircase. The tell-tale sign of layer shifting is a staircase effect. As we have said, layer shifting is a common problem that occurs with 3D printers, and it is fairly easy to spot.

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