Hi Andre, was the problem that sweep "auto place" mode was being triggered when you didn't want it?

If so then another way to fix it would be to use Construct > Offset on your rail to make one that touches the profile to be swept like this:



In the future I want to add in some kind of control for sweep so you can tell it to do "auto place" or not explicitly, the current way it tries to detect it can have it turned on when it is not wanted like in your case here.

- Michael