Swarf is biting my part

Swarf is biting my part

mark8A56D
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Swarf is biting my part

mark8A56D
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I have a Swarf operation that simulates fine in Fusion, but the posted g-code actually bites deep into my part and ruins it. This is running on a PocketNC, where I've run similar Swarf recipes with no problem. Design is here: https://a360.co/2SD52Et

 

Here's a screencast of Fusion's simulated run:

 

Hmm, dunno how to post a second screencast, but it's named swarf_bite_pocketnc_sim. In that screencast the posted g-code's running on PocketNC's online simulator at sim.pocketnc.com. The deranged toolpath is now visible (below) and running the simulation there bites the part. I've attached the .ngc and .stl files to upload as the "GCODE" and "MODEL" respectively to confirm as you like (.ngc was gzipped for upload).
 
Screen Shot 2020-10-07 at 1.31.04 PM.pngThis looks overwhelmingly like a post-proc problem. I tried every Swarf setting but nothing helps.

Thanks in advance for any insight,
Mark
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