How do I make a 3D-Object of this Xara-Shape?

[Soquili]

Hi Wolfgang,

To get a clean path I edited your .xar and removed the purple shapes behind the black shape.

I exported from Xtreme as Adobe Illustrator .ai which I opened in Cinema4D.

The .ai path was rotated to lie in the x-z plane.

An Extrude Nurb was put in the work space and configured to extrude the path 20 meters in the y direction and to put caps on both beginning and end.

The .zip file contains a wavefront object of the result.