I am having trouble centering an extruded Solid with respect to an other solid.
The problem is that after you have Grouped the extruded shape to form a Solid, if I then click Select and left click to select the solid, you get a blue bounding box around it.
However this blue bounding box does not have any useful geometric attachment points (e.g. Midpoint) and when you click Move, and then mouse-over the parts of the blue box, you don’t seem to get the same control points that you do for say a simple cube.
Instead what I get is a little purple ball with popup saying “Endpoint in Group” appears, but there is no obvious way to select the object by a MID point on the solid.
Four red crosses also appear, but if you click on them the protractor appears after which point you can only change direction but not Move the solid object.