greddy

TL;DR: the gcode produced is broken; edit the file; remove all lines referring to T0 ---- I have a Qidi i-Fast (dual extruder), and have been having the same problem. The part I've selected to slice is set to the second extruder. I've tried turning off the "enable" checkbox for the first extruder as well, but no luck - the GCode keeps trying print from the first extruder. I ran the GCode through ChatGPT, and I think I've found the error: The Gcode produced uses "T0" for the first printhead, and "T1" for the second. Ideally, there would be NO reference to "T0" in the Gcode, but as you can see, there are 4 commands involving T0. The main problem is that the last tool command makes that tool in use... So after the T0 3600 command happens, the first printhead is now in use... and there is no subsequent T1 command, so T0 is used for the entire print. Solution is to just remove the (4) lines that mention T0. ;FLAVOR:Marlin ;TIME:17624 ;Filament used: 0m, 17.5735m ;Layer height: 0.2 ;MINX:89.111 ;MINY:59.11 ;MINZ:0.3 ;MAXX:240.895 ;MAXY:190.89 ;MAXZ:15.9 ;TARGET_MACHINE.NAME:i-fast ;Generated with Cura_SteamEngine 5.6.0 T1 M82 ;absolute extrusion mode G28 G0 X0 Y0 Z50 F3600 M140 S60 M104 T0 S220.0 -> temperature setting of T0 head M104 T1 S220.0 M190 S60 M109 T1 S220.0 M109 T0 S220.0 -> temperature setting of T0 head T1 F3600 G92 E-19 G0 X0 Y4 Z0.3 F3600 G1 X330 E0 F2400 T0 F3600 -> sets the movement speed of the T0 head # PROBLEM IS HERE G92 E-19 G0 X330 Y5 F3600 G1 X5 E0 F2400 ..... M104 S0 T0 -> temperature setting of T0 head M104 S0 T1 M140 S0 ;Retract the filament G92 E0 G1 E-3 F300 G0 Z320 G0 X330 Y0 F1800 M82 ;absolute extrusion mode M104 S0 ;End of Gcode