Cut along the red line

The two beams intersect
as cut along the red line?

Get the plane of the face of the curved beam on which the red line is drawn.
Use that plane as the tool in Geometry.Split with geometry being the beam to be cut


Thanks for your time, Vikram
works well …

Hi @alex_volt
Do you mind sharing your workflow? I’m stuck in a similar case, and I need some reference, specifically the Lofting / profile rotating part.