Grounding spindle

How would i go about grounding my spindle? Is there a common ground in the board i should use or just run it to an outlet ground?

EDIT: See the post below which has the specifics of which pin is grounded.

I grounded the spindle and “Z” plate to a separate ground on my Pro.

Well it’s new HDM. I was under the assumption that the spindle was grounded but that does not appear to be the case. I’m not using a bitzero but i see that there is a ground on the board connector for it. Should I run the ground to this pin?

Please check in w/ on that, unless @Luke comments here.

Please email support with pictures. Pin 4 should be grounded and it goes to the VFD not a board


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