Answer
Aug 15, 2023 - 08:00 AM
The extruder may have skipped off the track as a result of the build platform not being level or due to a buildup of excess filament around the extruder tip. The 3D20 did not detect this skip and is one step ahead of the extruder. If this happens you should stop building and see instructions on cleaning the extruder tip and leveling the build platform.