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Tool change G Code Garbled


cmhnav
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Posted · Tool change G Code Garbled

I'm trying to implement a section of G-code during a tool change, shown below:

EXTRUDER START G-CODE
; Start Extruder 1
M211 S0 ; Turn off soft stops
G1 X-9.5 F6000 ; Go to X=-9.5 at 100 mm/sec
G92 E0 ; Reset extrusion distance on new tool
G1 E50 F90 ; Extrude 50 mm of filament at 1.5 mm/s on new tool
M211 S1
G92 E0 ; Set current extruder position to 0mm
G0 F10000 ; Increase feed rate before next travel.

 

 

EXTRUDER END G-CODE
; End Extruder 1
G92 E0 ; Reset extrusion distance
G1 E-5 F5000; Retract 5 mm
G91 ; Switch from absolute positioning to relative positioning
G1 Z1 F1000 ; Lift nozzle by 1 mm in relative positioning mode
G90 ; Return to absolute positioning
G92 E0 ; Reset extrusion distance on old tool

 

I do this for each of my two extruders under the machine settings for my printer.

 

The issue is that when I slice a file, save the G Code, and then view the G Code in Notepad++, one/both of the sections of custom G Code are unreadable. They show up as non-characters, and the printer doesn't execute them. If I copy/paste the text in my snippet above, it never makes it to my G Code. Any idea?

 

 

 

 

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    Posted · Tool change G Code Garbled

    For example, the extruder start g-code above ends up as ��� (or however your text editor shows unreadable characters).

     

    It isn't constant. The same start g-code will work perfectly for another file, or it'll only be garbled for the first 10,000 lines of the g-code file, etc. and appear normally after that.

     

     

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