I have a problem with circular orbits and diagonal orbits. If the machine is milling a straight line parallel to the X or Y axis, the surface is very good.
However, as soon as a path with G2 / G3 instructions comes up, or Digonal, the surface has facets.
The machine is checked mechanically and OK. It doesn't matter whether it's POM or aluminum, the milling pattern is the same.
I tested different CAM software, always the same result.
My suspicion was that the curve consists of many short G1 instructions, but as I said, there are G2 / 3 instructions that are used in the CAM. There is no difference between G64 / 61.
Now I only suspect two things. Either control software that may convert the G2 / 3 instruction into G1 instructions before milling. Or the cogging moments of the steppers.