# Freecad Post Processor for CNC jobs - Error messages, no gcode file

**URL:** <https://forum.snapmaker.com/t/freecad-post-processor-for-cnc-jobs-error-messages-no-gcode-file/28779>\
**Category:** Snapmaker 2.0 (3-in-1)\
**Tags:** Gcode\
**Created:** [January 4, 2023, 8:25am UTC](https://forum.snapmaker.com/t/freecad-post-processor-for-cnc-jobs-error-messages-no-gcode-file/28779 "2023-01-04T08:25:16Z")\
**Posts on this page:** 1\
**Showing post:** 1

<div class="post-metadata">

**Author:** ![spitzlbergerj](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/spitzlbergerj/32/3596_2.png) [@spitzlbergerj](https://forum.snapmaker.com/u/spitzlbergerj)\
**Post date:** [January 4, 2023, 8:25am UTC](https://forum.snapmaker.com/t/freecad-post-processor-for-cnc-jobs-error-messages-no-gcode-file/28779/1 "2023-01-04T08:25:16Z")

</div>

Hi  
I create my 3D models with Freecad. Now the first CNC job is coming up. On github snapmaker provides a [tool library and a Post Processor](https://github.com/Snapmaker/snapmaker_cnc_post_process) for this. In this [post](https://forum.snapmaker.com/t/cnc-post-processor-ask-for-testing/5864) was asked for tests for this. Unfortunately I had not seen that at the time.

Creating the model and converting it to milling paths via the workbench path worked very well. Unfortunately the Post Processor generates an error message, which I also reported via a [github issue](https://github.com/Snapmaker/snapmaker_cnc_post_process/issues/23) in detail. The error message is

```auto
'_TempObject' object has no attribute 'InList'

```

My freecad configuration is

```auto
OS: Windows 10 Version 2009
Word size of FreeCAD: 64-bit
Version: 0.20.1.29410 (Git)
Build type: Release
Branch: releases/FreeCAD-0-20
Hash: f5d13554ecc7a456fb6e970568ae5c74ba727563
Python 3.8.10, Qt 5.15.2, Coin 4.0.1, Vtk 8.2.0, OCC 7.6.3
Locale: German/Germany (de_DE)
Installed mods: 
  * LCInterlocking

```

Does anyone here have experience with other postprocessors such as the freecad marlin postprocessor? Can this also be used?

How do you create your gcodes for CNC milling?

Thanks a lot!

Many greetings  
Sepp

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