... da gibt's ein Macro, mit dem man derartige Raumkurven generieren kann.

... with mirror-features like Draft_Clone you can do this task.
The proposal still needs some rework for your taste.

... it gets a little bit weird, your duct. Intersections!
Maybe you need 3 profiles

... noch ne Empfehlung bzgl. Sketcher Polylinie: Mache lieber keine Pipe draus, das Sketcher Bild geht auch ohne Sweep und Profil durch. Man kann die Stränge auch mittels Join-Curve aus der CurvesWB verbinden und die Stranglänge einfach ermitteln. Wichtig für den Abgleich und das Konzept. FuBoH.PNG ...

... a really interesting task, to build a helical pipe with a controlled contour - more than cylindrical or conical. The icon of the Section tool in PartWB only promises a cut with a plane - but it can apparently do more. Here a helix done as a sweep with an edge, is cut with a rotation profile and ...

... na endlich : Show axis cross by default => danke!!!
Jetzt kann man nur noch auf FC.19 final fürs gemeine Volk hoffen.

... another answer/solution to the starting question.
Sometimes the shape has a high angular resolution value and gets splintered/incomplete.
Insert smaller resolution values.

... the helix body has without in- and outlet a total length of about 7,55m. Making a cylindrical helix with minimum diameter gives some 24 rounds. This helix can be subdivided to 4 "symmetrical" parts and get defined markers. Bending to greater radii afterwards could easily be done and gi...

Hey Lars, I tried to model your pipe helix in a regular manner => constant bend radius and straight run after each other. Done by intersection of a loft and helix sweep - only to understand the principle of bending sequence. Making up the pipe sweep my PC and/or FC.18.4 are really gasping. Some minu...

... bending the pipe with controllable rollers instead of a die.