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In order to benefit others who may come along, in the future, with a similar problem, what was the solution?

you need to increase chip load: decrease spindle speed, increase travel speed, change to larger diameter endmill, endmill with fewer flutes. Or some combination of the above.

forgive me for these basic questions, in case they are too basic.

is the Z missing steps? what if you reduce the plunge rate?
Or, are you using an upcut bit and the Z is not holding -- that is to...

I would take a close look at the frequency of the signals being sent to the motor. It should NOT be hot. barely warm is okay, but if it's hot, something is not right.

I think we need higher-resolution photos. What is the make and model of that motion card? Have you searched for a manual for the card? or can your seller provide one?

Thanks again for the guidance.
My spindle does indeed have a 4-pin plug so i should be able to ground the shield when swap out the wiring for shielded (I have some 16/4 on the way, and i'll probably...

Congrats! I took your suggestion and d/l'ed LinuxCNC, got it installed and spent a few minutes with it. I was in the process of getting the LHB04B-4 setup when I realized that LinuxCNC doesn't...

as promised. before any of the tiding up and re-routing. I would prefer a copper barrier between the VFD and isolating HF & A/C lines from signal lines but it is what it is.

OK. The ferrite chokes and shielded 3' USB cable came in the mail today, but they didn't help at all.
I tried swapping the X & Y cables at the rear of the cabinet. The problem moved to the Y axis....

mactec54, I appreciate the guidance.

I see this issue even with the spindle stopped (VFD powered up). I've not seen this X-axis motion before while executing GCode or using the on-screen MPG or...

with regards to replacement, unfortunately I already tried this. This is my second XHC pendant. The first had the additional issue of a wheel which was much less responsive.
I will d/l the LinuxCNC...

in this case a brush curtain might be the only easy solution, or build yourself a sheet metal cover which has a slot for the spindle bracket but otherwise encapsulates the ways?

update: I downgraded to mach 3.043.62 - no changes.

Motion on the Y, Z, or A axis will result in occasional (always positive direction) motion on the X axis, but only if using continuous mode...

Hi folks - first post here. Looking for a bit of advice/help. I'm running a chinese CNCEST 6090 cnc router, mach3 control, everything working properly and as expected. win7-32bit +- mach3.043.66.
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