it should be the same - draw a centerline across the face of the block, making the endpoints of the centerline coincident with opposite corners of your rectanguar block (or the midpoints of parallel sides - it doesn't matter), then relate your spigot to the midpoint of the centerline.
I have a simple block with an extruded rectangular "spigot"
> coming out of one face. I just do not see how to create a
> relationship between the "spigot" and the base block to make
> sure it is always in the centre of the face.
>
> I have been through the tutorial and I can see how to do this
> if it were a cylindrical "spigot". I would create a centreline on
> the base block face and then create a relationship between the
> centre of the circle and the midpoint of the centre line. I don't
> seem to be able to do this with a rectangle.
>
> Any help would be appreciated.
>
> Thanks,
> Roy
>
>