"spaco" wrote in message
...
I have no idea what a "generic x2" milling machine is, but
these two comments suggest to me that you must be feeding 'way too fast
for the stiffness of the setup/machine.

It is a thought but I doubt that. Usually I feed slowly so that neither the
machine nor myself are shaking.

Is the machine bolted down? If not, do it.

It is.