Anyone else with a UMC-500 having some slight issues with rigidity? Seems like even with aluminum if I want to hold any sort of tolerance I am having to add a spring pass to my finishing toolpaths.. Even running basically the same cutting parameters, tooling, etc. from previous runs of the same part in another VMC (moved setup to 5 axis to eliminate part handling between setups).

Also experiencing cutter marks on the floor of pockets, etc when the machine changes direction, these are more prevalent on aluminum parts most likely due to the increased feedrate. I have tried different G187 settings but still haven't completely figured out what's causing these issues.

I completely understand, the machine isn't going to give us the same rigidity as a traditional table travel VMC, but troubling to have these issues on finishing cuts..

Any input is appreciated as I am waiting to hear back from our HFO.