Why does the stringer need to be "one element"? If the stringer has curved slopes and flat portions, it is probably going to be built in pieces. No? What if it has some seams?
As I said, I tried to build it with two or more elements but I couldn't because void elements didn't work. I have to cover the extra extrusion because I picked the 3D edge and in this case, I can't correct the geometry of the picked line.
I have uploaded the model, anybody can check what I have done and try to do something else.
Why are you modeling with model in place? Did you configure the stairs properties to have stringers and that didnt' work?
Have you tried to do it in another way, such as top rail with a profile?
First of all, I tried to use the properties of the stairs family. Everything work if stairs not complicated, so to say straight. Also, I have some conditions from the architect, for example, both stringers have to be at the same level, like the top sides have to be 2 inches above the concrete slab. Also, at the bottom, the stingers have to get extend over the first step for four inches. The properties of the stair family don't let me do so. It's why I started to use the model-in-place.
In addition, if you take a dive into the model, you'll find that some upper steps don't connect to the bent stringer correctly, even if get to use a family top rail with a profile. I also cover this bug using model-in-place elements.
