Random out of control cuts, stalls

My Nomad3 is sometimes stalling, spindle still on, or even worse will sometimes go off course and wreck my project. I am suspecting some sort of issue with communication over the usb, like a disconnect. GRBL errors vary slightly, but usually gSender throws out ERROR 1. I can re-start the job and usually it will run with no error, so I am leaning away from a code problem.

I use HSMWorks (Fusion) inside Solidworks with the latest post processor from Autodesk to generate code. I then use gSender to run the file.

Things I have done:

  1. USB cable direct from PC to machine
  2. high quality cable with ferrite beads on both ends
  3. machine is on a separate circuit than the PC
  4. tested outlets for proper grounding

Also, will devices like cell phones, wifi, or Bluetooth, really cause a disconnect?

Having Bluetooth running on the computer Carbide Motion is running on may prevent the USB connection from being found by CM.

You can check the code by putting Grbl into Check mode where it will process all code (but not move) by sending $c to the machine. (Agree that the code likely doesn’t have a software error)

What sort of toolpaths are you using? Is adaptive/trochoidal an option?

Please write in to support and we will do our best to look into this with you.

I’m not using Carbide Motion, I am using gSender. I have used the verfiy feature to check the code with no errors…plus I stated that I re-started the job and it ran just fine.

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