Milling the cnc wasteboard flat (or so I thought): mis-aligned z-axis modules

[eh9]

@brent113

@eh9 Sure, that’s true. I think there are simpler explanations for @brvdboss’s issue before we need to invoke non-repeatable power loss behavior.

I wasn’t saying that was what happened. I was saying that it was a possibility.

The real lesson here is that it should be considered ordinary practice to recheck squareness of the axes after any extraordinary event. That includes power loss, but there’s far more than that.