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MFM Command Setup

  1. Download the current code of MFM and extract the entire folder to a location such as your user home directory ~.

  2. Replace the UPPERCASE of the below sample MFM command text as described further below.

"PYTHONPATH/python3.exe" "SCRIPTPATH/mfm_cmd.py" -c "OPTIONSPATH/options.json" -t "TOOLCHANGEPATH/toolchange.gcode" --disable 0;

Command structure:

  • PYTHONPATH is the location of your Python installation. This is the folder that the Python executable is in. You may need to change python3.exe to match your Python name.

  • SCRIPTPATH is the location of all the files in the src directory.

  • -c – Options JSON

    • OPTIONSPATH is the location of your Options JSON file. Change options.json to the options file name.

  • -t – Toolchange G-code

    • TOOLCHANGEPATH is the location of your Minimal Toolchange G-code file. Change toolchange.json to the toolchange filename.

  • -le optional – Line ending style

    • AUTO – Auto detect
    • WINDOWS – \r\n
    • UNIX – \n

  • -o optional – Output Print G-code location.

    • Omit this parameter if using MFM as an intergrated Post-processing Script within the slicer. This is the location of the output printing G-code. MFM will overwrite the input file if no output file is specified.

  • --disable optional – Quick toggle for enable/disable MFM post processing without needing to clear the entire slicer Post-processing scripts option.

    • 0 – MFM is enabled
    • 1 – MFM is disabled

  • -h – Show parameter help.

Windows command example

Put the downloaded project folder in your user home folder. Replace USERNAME with your username.

"C:\Users\USERNAME\AppData\Local\Microsoft\WindowsApps\python3.exe" "C:\Users\USERNAME\mfm\src\mfm_cmd.py" -c "C:\Users\USERNAME\mfm\premade_options\USAofPlastic-meters.json" -t "C:\Users\USERNAME\mfm\minimal_toolchanges\bambu-p1-series.gcode" --disable 0;

Linux / Mac command example

Put the downloaded project folder in your user home folder.

/usr/local/bin/python3 "~/mfm/src/mfm_cmd.py" -c "~/mfm/premade_options/USAofPlastic-meters.json" -t "~/mfm/minimal_toolchanges/bambu-p1-series.gcode" --disable 0;

Python path (PYTHONPATH)

The exact PYTHONPATH will depend on how you installed Python.

Find where your Python location by running

  • Windows cmd.exe where python3 or where python or Get-Command
  • Linux/Mac terminal which python3 or which python

Common Python install locations for Windows are

  • C:\Program Files\Python X.Y Python installer "for everyone" option
  • C:\Users\USERNAME\AppData\Local\Programs\Python\PythonXY Python installer "for me" option
  • C:\Users\USERNAME\AppData\Local\Microsoft\WindowsApps\python3.exe VSCode Python install

Common Python install locations for Linux/Mac are

  • /usr/local/bin/python3
  • python3 or python