That’s what I thought, but the vibration analysis said it was in spec before the beltIt just sounds like vibration.
Can you get a good finish at 6-8K RPM with the new belt?
The finish is OK at lower RPMs but it still isn’t completely free of these artifacts in the cut — I’d say at all spindle speeds the finish is improved by about 50%. To be fair, even though the finish is good at 2-3K, it still isn’t 100% consistent. Not sure what to be expecting though or what is reasonable. I’ll have to run some more tests to validate this — I haven’t had much time with the machine yet.