Is there a tried and true method for doing this? Feels like this might be quite common.

I have a geometry like this example and am trying to generate a curve that sits in the middle of its cap and follows the shape around the curve - so not a simple extraction from edge.

Perhaps I need to calculate diameter and place a point in the middle or some such?



Any tips!?

Try the Labs straight skeleton 3d

This might give you some ideas:

It depends on the topology, the solution may be trivial edge loop based, uv based or more convoluted like straight skeleton

In the case from your picture I assume it should be pretty straightforward as the geo seems clean, so you can easily get centroid of each loop and connect them to a curve

Since there was no file attached to your post, hopefully description is enough

maybe it Helps!

Thanks all, some interesting approaches and learned some stuff! I ended up following along this which seemed to work well: https://www.youtube.com/watch?v=F86-TDRzjnc [www.youtube.com]