Hi Michael,

That's what I was thinking too.. the closest point between circles that represent the girdles of the stones.

Yup, the path curve is imaginary.. it's just used as a path for the array.

Your idea about using a perpendicular line stemming out from the closest point between two circles
would probably work well for stones along a straight or nearly straight path curve, (in fact I've done it that way before)
but I'm not sure about how it'd work for placing prongs along stones on a path curve with wide or tight bends..
I'm not on a computer with MoI right now, so I'll have to check that idea out later.

So if it used the two different-in-diameter circles to calculate an offset along a perpendicular line from a line drawn between the closest points of those circles,
would it replicate the same placement as you would if you took into account the curvature of the array?

I used the midpoint of a line I drew between the intersections of the two circles
and an offset parallel path curve, but that method entails too much user intervention to effectively automate, I would think.

Thanks,
Jesse