Below a complicated case regarding a fin-tube with ribs, where on 4 places the ribs are bended.
After spending some time struggling with sheet metal and the sweep feature, hereby the request for some support/ideas to create the 3D.
Goal: converting an old 2D drawing into a 3D model. Fin-tube with folded/overlapping fins on 4 sides, images of the 2D:
Status at the moment, fin-tube with ribs, but without overlapping:
Tried sheet metal option but not possible due to the shape of the helix.