Generate a G-code print file for an additive FFF machine

Post process your additive toolpath to convert it into a print file containing G-code that your FFF machine can understand.

1. Ensure that you have an additive setup with an additive FFF machine selected.

2. Ensure the setup’s additive toolpath is generated.

3. On the Manufacture workspace toolbar, click Additive > Actions > Post Process .

   The NC Program dialog opens.

4. In the Settings tab, ensure that the Use Machine Configuration checkbox is selected.

   Fusion automatically selects the Machine and Post needed to generate the G-code based on the machine selected in the setup

5. Enter a File Name for the print file that contains the G-code.

6. Select an Output Folder for the print file.

7. In the Post Properties group, review the list of properties and update as needed:

   1. To find the best printing temperature for your filament, set the Temperature Tower options.

      This creates a test print that changes the temperature at different heights or layers. By examining the print quality at each temperature, you can determine which temperature works best for your filament.

   2. Select or deselect the Relative Extrusion Mode checkbox.

      By default, the checkbox is selected, meaning that each extrusion value is relative to the previous one (incremental extrusion). This makes the G-code easier to read and visually check before sending it to the FFF machine, but it can lead to cumulative rounding errors. Deselect the checkbox to use absolute extrusion if preferred.

      Note: Other properties may be available depending on the post processor.

8. Optional steps:

   • To ensure that the print file opens when it is created, select the Open NC File in Editor checkbox.

   • To ensure that an NC program gets added to the Browser, select the Create in Browser checkbox.

     Creating an NC program allows you to save these settings, making it easier to adjust and post process in the future without having to set everything up again.

9. Click Post to generate the print file.

Now you can transfer the print file to the FFF machine for 3D printing.

For a list of all post properties for FFF machines, see Post Processing and Postprocessor Properties for FFF (Fused Filament Fabrication) Printers in Autodesk Fusion.