I just wanted to pin this thought somewhere. I do a lot of work in classical styles, and as a result I’m always dealing with cyma curves. I generally try to consult historic literature for techniques in drafting, which results in me attempting to decipher highly ambiguous line work. From everything I have read, two principle ways to drafting cyma curves reappear:

Both produce pleasing curves, but I am interested if anyone has a preference of the two (maybe someone with a mathematical basis), or even an alternative?

Initially A and B seem to produce very similar curves:

That’s neat. I assume the ability to set the chord proportion means it generating a truly continuous curve and not just splicing two arcs together. I will definitely give that a try.