Beam that sweeps around a curve

[Joseph_Oster]

Twisted sweeps are a common problem:

Affecting plane's rotation by other planes (not aligning them)

Hello there, I’m trying to solve this: straight parts without torsion as little torsion in the arcs as possible transitions should be as smooth as possible the orientation of the rectangular profile should be the same in all bents Right now I make perp frames on the arc, shift them and use the y vector’s average to determine the rotation of the straight parts. But this is not enough, as you can see in the left, it does not work with all transitions (8 and 9, 3 and 2). It should look a bit li…