Snickerdoodle

This isn't my own start/end g-code. This is straight from the Wanhao Duplicator i3 Plus profile provided with Cura upon installation. This change did make generated gcode openable though, thank you.

Here's an example generated from Cura that won't load back into Cura for me. WDI3P_Front_Loader_Reoriented.gcode

I am trying to diagnose an extrusion issue I'm seeing only in Cura that I've had for a while now, but I've run into a roadblock. I can view Simplify3D's GCODE and Slic3rs GCODE in Cura, but I can't import Cura's own GCODE to analyze what Cura is doing. This strikes me as a pretty serious issue. Can anyone else confirm this? To recreate the issue, Be using 3.6.0 Slice a file and save the GCODE Try to re-open the GCODE Try to open another slicer's GCODE as a comparison Attempting to load Cura's sliced files back into Cura results in an "Invalid File" error. Someone else please test this to confirm whether or not this is just me.

As an update, because I haven't posted in this thread in a bit, Cura is still giving me this same issue with some prints, no matter how many times I reprint or re-slice in Cura. Example: https://i.redd.it/ud40tsspo7921.png (Excuse the not-perfectly-tuned Slic3r settings, it's just there as a control to show that my printer can do this with other slicers just fine) It's always at a set location for every layer. I have M400 as a start gcode command, so it's not a printer buffer issue.

Yep, that'd be me. I was right next to the printer when it started doing this unusual underextrusion pattern, and I do not believe my printer is at fault for a few key reasons. The filament can't slip as I bought a bondtech extruder a few months ago, which has completely erased any issues related to filament grinding and slipping for me When I was observing the several layers that started with underextrusion (with some overextrusion around the rest of that perimeter) I heard no clicking from the stepper, so it wasn't missing steps or anything. I only saw underextrusion like this when I upgraded to Cura 3.6.0 last night. I was using 3.5.1 before that. These lines are clustered together in the exact same spot, and are too consistent for me to consider it random underextrusion.