So after installing the latest version of Ultimaker Cura, Cura decided to corrupt all of my printer settings from the previous version, and I had to start over completely from scratch. Whatever, I understand this happens sometimes, but what I really didn't understand was why my already difficult-to-load filament kept retracting completely out of the extruder every time a print finished. Finally, I uncovered this in the End G-Code:
M104 S0
M140 S0
G92 E80
G28 X0 Y0
M84
Can anyone explain what the rationale for this was? G92 is used to reset an origin. What business does it have being used to command an extruder like this? Why couldn't whoever came up with this just use the G1 command if they wanted to add a routine extraction? And why on Earth was this set by default to 80mm? Why would anyone think that this was a good idea to include? Can anyone think of any conceivable situation where automatically retracting 80mm at the end of a print would be something an operator would actually want? I'm just asking because I had nothing but nonstop printer problems all week and this was just the icing on the cake.