Terry,
there's also a limitation in creating the Flat Pattern;
when both dimensions of the section are equal to thickness, you have to manually
select a starting face for the unfolding, because it of the ambiguity in determining
which ones are the detail faces in the part.
In this case, you can also workaround the unfolding problem in IV 2010, by using
the "Unfold" feature to manually unfold the bends and then create the flat pattern from the unfolded part.
Thanks,
Lucia Casu
Inventor Part Modeling
Lucia Casu
Fusion360 Development