I don't usually assemble my projects in the CAD program. 
I needed to this time to get the proportions right for the center piece.
A few details changed after this drawing was completed.

Bottom completed

Side links being center drilled

Base with bottom link

Drilling the bottom link

Everything but the arms. Lot's of wet sanding left.
Count the number of #4 machine screw holes that have to be tapped. That gets done while the mill is running cutting parts..

Trial assembly.
An additional set of arms (not made yet) will mirror the four on the front. And everything still needs wet sanding and rough & final polishing.

The addition of the rear arms add to the depth of the body
which makes a huge difference.

Kind of looks like the drawing... doesn't it.