Help on proper grounding of HDM

[BlackArts (David Bleakley)]

Hello,

New to CNC machining and am in process of setting up my HDM, 220V spindle. I’ll be cutting mainly composites, carbon, fiberglass, G10, but also MDF, and aluminum.
Can anyone point me to info on grounding the HDM and dust collection properly? Or provide advice on doing so? I call electricians Gandalf because electricity is like magic to me… I just dont get it!
Thanks!

[WillAdams (William Adams (Carbide 3D))]

Please see:

Grounding your Shapeoko

Why would you want to ground your Shapeoko? This isn’t something everybody should do, but if you have either of the following issues, you should consider it; Dust & chip accumulation (on rails and V wheels causing movement problems) Random disconnects (when cutting plastics or when extraction is on) There’s nothing ‘wrong’ with the way the Shapeoko is delivered and there’s no safety issue WRT grounding on the machines (if you add a VFD spindle that must be properly grounded but that’s not for…

Mostly it’s just a matter of identifying each electrically isolated component of the machine, then running a wire from there to the ground point in a star topology so as to avoid ground loops.

[BlackArts (David Bleakley)]

Mainly, I have read of folks having issues with machine cut offs, and many suggestions on grounding the spindle and various other recomendations including grounded dust collection systems.
Carbon fiber and the epoxy resin matrix accumulate static readily. I’ve seen large carbon parts put guys on the ground while pulling off the release films.
Just searching for advice and trying to properly prep.

[WillAdams (William Adams (Carbide 3D))]

The newer electronics are much more resistant to EMI — should be fine.