Autodesk Fusion Stops at second Tool Path (Taking STL File, processing through Fusion for Snapmaker 2.0 CNC)

[wes_mcconnell]

On my Snapmaker 2.0 CNC, I am trying to carving detail topographical reliefs of mountain ranges across multiple tiles so I can continually extended a mountain range carving. I downloaded a 4 tiled topographical mountain range map (STL File).

In the snapmaker forums, it was suggested I use Autodesk Fusion (they called it Fusion 360). However, now I have Fusion related questions. I now have an error in the second Tool Path setup where I am stuck. The Parameters are set, and the Tool path progress is 100% but it is stuck and the final Stock is still In Process. I cannot run a simulation because it says the Toolpath is still generating. But the program has been stuck for 4 hours so far.

A very nice Mr. Rodney Shank made a very detailed review of the process for setting up initial Rough Tool Paths then the fine tool path (https://www.youtube.com/watch?v=TfqBKqzxl44 ). Although this tutorial is for a slightly older version of Fusion 360. The Current Autodesk Fusion is very similar. However, for my second detailed Tool Path, I get this stuck error.

I am not sure what to do at this point. Has anyone come across this problem and have a solution?

[seth.madore]

How is your tool defined? Would you be able to share your Fusion file here?
File > Export > Save to local folder, return to thread and attach the .f3d/.f3z file in your reply.

[wes_mcconnell]

Sure thing Seth,  Here you go.

Thank you so much

[seth.madore]

That's because your tool has a zero diameter tip. The toolpath tries its best to calculate it, but calculation will run into infinity or out of memory, whichever comes first. In reality, all tools have SOME level of flat or radius at the end, so define something small like .1mm and you'll get this:

 

[wes_mcconnell]

Perfect, that fixed it.  What a silly beginner mistake.  Thank you!!!.

Next question, due to the detail in the map and probably the under-power(ness) of my laptop, Fusion takes a very long time to compute the tool pathes (half an hour to an hour for each one).  What is the preferred/ideal "power" (processor, DRAM, etc) for Fusion to function?

Thanks again!!

[seth.madore]

For starters, you can find our published list of computer spec recommendations:
https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/System-requirement...

Secondly; a lot of it comes down to the toolpath and settings. I recommend setting it to a coarse tolerance and aggressive stepover to just validate your approach, as this allows for quicker iteration. Is the toolpath hitting all the surfaces you need? Once you're pleased. tighten things up and live with the calculation time.

On my Ryzen7 2700x (6 years old now), it took 261 seconds for the Adaptive and 21 seconds for the morphed spiral