MASSPROP: Tracking down an unexpected shift in a solid's centroid

[indiancad]

I was checking a mechanical part using MASSPROP before and after removing a small amount of material. The volume change seemed reasonable, but the centroid shifted more than I expected.

My first thought was that the cut might have removed material farther from the main body than I had realized. Since the centroid depends on how the volume is distributed, even a relatively small cut can have a noticeable effect depending on its location.

In this situation, I would compare the original and modified volumes first, then check the centroid coordinates and inspect the cut geometry.

When you encounter an unexpected centroid shift after a Boolean subtraction, how do you verify whether it is a legitimate geometric result or an unintended modification to the solid?