Hello,

First, Happy New Year to all!

I am just sticking to a very simple task creating a helix and using the helix as rail to sweep a profile. I have no issues when using a circle as profile, but if using a asymmetrical profile, the profile gets slowly rotated out of the orientation at the start. (Hard to explain in words, therefore I attached some screenshots.

A similar effect can be seen when creating a circular array by copying the profile along a curve (given by the helix).

How can I keep the straight side of the profile parallel to the helix centerline?

Thanks for any input in advance ;o)))

Joerg