This is a challenge that comes courtesy Dave "Honeybear" Foregger. While I was in Boston, he showed me a pentagram vs pentagram hybrid he'd been working on and it set my gears turning. It's a similar challenge to triangle vs triquetra, but the trochoid pentagram must travel much faster to stay in phase with the plane-bent variant, so synchronizing their movements can be a pain. This is also a great use of crane position done in different orientations.

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techblog232.mp4