girlinmotion

Thanks for the tip on HHE! So, I need to "retract" my earlier statement. I swear, when I looked through OctoPrint's scripts the ending script was empty. Turns out it wasn't. Sigh. Big sigh. I watched the log in OctoPrint and captured the following lines: Send: N91903 M84 X Y E*121 [...] Recv: ok Send: N91904 M82*28 Recv: ok Send: N91905 M104 S0*97 Recv: ok Changing monitoring state from "Printing" to "Finishing" Send: N91906 M400*32 Recv: ok Send: N91907 G1 E-5 F300*6 Recv: ok Changing monitoring state from "Finishing" to "Operational" The line N91907 is not from the gcode file, it's the end script from OctoPrint that didn't show the first time I looked through the interface. I don't know if there was a delayed load on the page, or what, but I know I've checked that field in the past to ensure it was empty. I cleared it again and it's been fine since. The only difference I can think of between Simplify3D and Cura, is that S3D probably left the printer in relative mode, so that when this ending script ran from OctoPrint it only retracted 5mm? Anyway. I'm really happy with Cura overall, and my printer is running so much better these days.

And it did not do a wild retract here, with a terse version of the roller (I didn't leave quite enough room for the bearing requiring it to be hammered into place). A snug fit is good, but this is too snug... This gcode file is just a small part of the roller. roller test.gcode

I was puzzled by that as well, as there doesn't appear to be anything in the gcode that would cause a large retracting. It did do it at the end of the print for the roller.gcode file above. I verified that my Octoprint setup does not have any ending scripts, and I have no post-processing plugin for Cura. I recently switched from Simplify3D. I raise my post/issue here on the Cura board since the only that's changed in my setup is the slicer (Simplify3D to Cura) and now I'm having this issue. I was using S3D for quite a while and never ran into this large retract. Perhaps it's something in the gcode though, that's not explicitly a retract, but is causing the printer to retract regardless?

I've noticed this problem as well - Cura 4.8 on Linux will add a large retract at the end of the gcode, causing all the filament to be removed from the bowden tube. A little retract is nice, say 3-5mm, but 750mm or 950mm is excessive and leads to the next print failing unless I ensure that the filament is indeed loaded. Since the problem is random, I'm not in the habit of checking each time. I am using an OctoPi setup. The prints are absolutely flawless, no errors, no corruption, etc. Whoever is suggesting "corrupt bits", etc., sigh. Anyway. This is on a CR-10s running the latest Marlin firmware (2.0.7x). Here's my ending gcode from the printer settings in Cura: G91 ;Relative positioning G1 E-5 F2700 ;Retract a bit G1 E-2 Z0.2 F2400 ;Retract and raise Z G1 X5 Y5 F3000 ;Wipe out G90 ;Absolute positionning G1 X0 Y{machine_depth} ;Present print M106 S0 ;Turn-off fan M104 S0 ;Turn-off hotend M140 S0 ;Turn-off bed M84 X Y E ;Disable all steppers but Z And the last 37 lines of the gcode from the file in case you don't want to download the entire thing: G0 F9000 X151.851 Y164.366 G1 F1500 X154.608 Y161.609 E952.71868 G0 F9000 X154.425 Y161.096 G0 X155.699 Y160.505 G0 X155.979 Y160.973 G1 F1500 X152.713 Y164.24 E952.91842 ;TIME_ELAPSED:8970.640296 G1 F2700 E947.91842 M140 S0 M107 G91 ;Relative positioning G1 E-5 F2700 ;Retract a bit G1 E-2 Z0.2 F2400 ;Retract and raise Z G1 X5 Y5 F3000 ;Wipe out G90 ;Absolute positionning G1 X0 Y300 ;Present print M106 S0 ;Turn-off fan M104 S0 ;Turn-off hotend M140 S0 ;Turn-off bed M84 X Y E ;Disable all steppers but Z M82 ;absolute extrusion mode M104 S0 ;End of Gcode ;SETTING_3 {"extruder_quality": ["[general]\\nversion = 4\\nname = Standard Qual ;SETTING_3 ity #2\\ndefinition = creality_cr10s\\n\\n[metadata]\\ntype = quality ;SETTING_3 _changes\\nsetting_version = 16\\nquality_type = standard\\nposition ;SETTING_3 = 0\\n\\n[values]\\ninfill_overlap = 50.0\\ninfill_pattern = grid\\nl ;SETTING_3 ine_width = 0.52\\n\\n"], "global_quality": "[general]\\nversion = 4\ ;SETTING_3 \nname = Standard Quality #2\\ndefinition = creality_cr10s\\n\\n[meta ;SETTING_3 data]\\ntype = quality_changes\\nsetting_version = 16\\nquality_type ;SETTING_3 = standard\\n\\n[values]\\nsupport_enable = True\\n\\n"} roller.gcode