Problem with rotation

Hi

Apparently this is a easy problem.
I need to do a rotation based in the axis marked with pink. The initial and the last position are correct, but in the middle of the animation the rotation is out off-axis.

How can i solve this?

thanks


Try it in a different mode perhaps, normal mode or local… I’m just guessing here, I would use a bone myself

man, one beer to you. Bones solve my problem