Twisted balustrades

Hello,

I just had a project, where the balustrades in a balcony railing were twisted and decorated. See the attached pictures and dwg's.

I contacted the supplier for some 3D models, but they didn't have any.

So, how would I go about making them myself?

I can't start by using weldments, because I wouldn't be able to twist them correct?

They are made up of 12x12mm rectangular steel rods.

Thank's in advance.

SolidworksParts And Features