Hi Micharl.

It's perfect, I didn't remember that Blend could also be used in curves.
Is there a script to be able to move a line tangent to the perimeter of a circle, ellipse or curve?
In the case of this spring, it is very difficult to place the end 'A' tangent to Helix at point 'B' or at another point.

Move the lines from points 1-2-3-4 around the circle keeping the tangent lines, as seen in the attached image.
I hope the translation is understood

Cheers