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LinuxCNC Error w/ Fusion 360 G-Code: "Radius to end of arc differs...."
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Hey all, I spent a couple hours troubleshooting a CNC issue and am at a loss for what to try next. Does anyone here may have ideas on how to resolve?
Here’s the context
Everything works as expected if I produce the G-code in V Carve, but I’m very keen to use Fusion 360 for a number of reasons. And Fusion works fine in most cases – the problem arises, however, only when the model includes dogbone fillets.
The error I get is identical to what's shown in the image below albeit with different values because I forgot to grab a screenshot.
For reference, here's the model I’m using. To replicate the error you would export G-Code from Setup1 > TestCut2 and then try to open the resulting file in LinuxCNC:
I scoured forums for Fusion and LinuxCNC and tested various suggestions one-by-one, all to no avail. Here are the things I already tried:
- changing the post processing properties to enable “Radius arcs.” This produces replaces the aforementioned error with a new one that says "Arc Radius Too Small"
- Reducing tolerance to .0001 (per this forum post). I tried this in the following places:
- Built-in tolerance in post-processing settings
- Minimum circle tolerance in post-processing settings
- Tolerence in the toolpath under "Passes"
- Increasing the size of the fillets to be well beyond the tool diameter.
- Creating the fillets using the dogbone add-in as well as creating them manually.
- Toggling off Lead-In and Lead-Out transitions.
- Changing the document unit from in to mm per some forum suggestion
Any help is much appreciated!