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Creating a surface from imported 3d Polys


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Hi all, 

 

I need to create a surface and give it volume to try do some earthworks calculations. I have imported the data in a series of 3d polygons into VW and have tried to convert to NURBS curves and a few other things but keep getting errors when it comes to creating the actual surface. 

 

I typically used VW for structural drafting and a some 3d modelling so I'm a bit out my depth. 

 

Any help would be greatly appreciated

Tin extraction.vwx

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