Here's my method, which relies on setting the angle constraint to 60 degrees and repeatedly snapping the rotation origin to the exact centre of graphic as you build it up.
(Tip: Zoom in when dragging the rotation origin to ensure that it snaps accurately to the /exact/ centre and not any path points that might be near by.)
There is some unwanted overlap which makes the line weight appear heavier in places and a bit "jaggy" but I'll leave it someone else to work out how to deal with that!
Step by step: flower of life.xar
Phil
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