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Change {print_time} variable output. (Printer can not display colons":")


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Posted · Change {print_time} variable output. (Printer can not display colons":")



I want to display the estimated print time on my  screen. I get the time with the variable {print_time} in the Start G-Code:


M117 Start Print {print_time}


Cura correctly generates the G-Code:


M117 Start Print 02:34:38


But it seems that the original firmware of my Ender 3 can not display colons, so the text ist cut after the first 2 digits:


Start Print 02


Is there a way to change the output of {print_time}? For example like 02h34m34s? When i manually edit the Gcode to that it displays fine on the screen.





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    Posted · Change {print_time} variable output. (Printer can not display colons":")

    You can add a Search-and-Replace postprocessing script to do this (Extesions -> Post Processing -> Modify GCode).


    Search: (M117.*)(\d+)\:(\d+):(\d+)

    Replace: \\1\\2h\\3m\\4s

    Use Regular Expressions: checked

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    Posted · Change {print_time} variable output. (Printer can not display colons":")

    Thank you for the hint with the post processing. Your replace code needed a little correction but it works 😀


    Replace: \1\2h\3m\4s


    Cura Start G-Code: M117 Start Print {print_time}

    G-Code: M117 Start Print 0h2m34s


    Thanks again,



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