I'm running Section Properties on the face of an Aluminum Extrusion (Bosch
45x45R). SW applies a Principal Axis at an angle to the Part Axis. Is there any method of controlling the X & Y axis about which the principal moments of inertia are calculated? To see what I mean, simply sketch a vertical line from the Origin and a horizontal line from the origin of equal length. Connect the two ends and extrude to any length. Select the front face and run Tool/Section Properties. Note the principal axis angle. This tool is relatively of useless unless the principal axis is aligned in some way to the forces applied to it.
Regards, Terry Robb