Then there are all those messy clamps to construct, the ones holding the
System-ships in place. I made sure the framework attaches to the spine
only at intersections of other struts. The "grabber" started out as a
stumpy hexagonal cylinder, with a smaller cylinder at the hinge.
I did put a groove in the upper section to suggest the separation point.
But for the lower grabber, I had to do far more work.
First I repositioned the upper frame's barycenter so it was
at the core of the spine. Then I duplicated the frame, and
rotated it around the barycenter by 180 degrees, which put
the lower frame in the perfect position.
Then came the fun part. Blender does have a Boolean function, where
one can "subtract" one object from another (or find just the intersection).
This would be perfect for drilling the engine-sized hole down the center
of the hexagonal face. However, I've found that Blender's Boolean tends to
make a tangled mess with far too many superfluous vertexes.
So I did it the hard way. I added an engine-sized cylinder, and
manually added edges between the cylinder's boarder and the hexagonal face.
Then the extra edges and vertexes are deleted, and you have a hole.
The hexagon was then split in two, and the two halves were rotated
30 degrees to make the grabber open its mouth.
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