How to make this a solid

 From:  RayCAD1962 (RAYCAD003)
11017.4 In reply to 11017.3 
Dear Matadem,
From my experience in this kind of Fin shape that you want to create as a closed 3D solid, I am sending you this picture to understand how you can do it plus the result of it.
Hope you will manage to do it.
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