IGS file Import

I downloaded the file igs of hull which is availble on KCS website. But to my surprise i tried to join surfaces but they are not joining after that i used join 2 naked edges command but still it seems the solid is not made… I am confused
I have just started using Rhino help will be appreciated… Thanks

Join command should be enough, it doesn’t require to select edges, only the surfaces.

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…if the surface edges are within the file tolerance… Maybe they are not - you never know when something has been modeled in another system. You can try loosening the file absolute tolerance and see if that helps any.

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Agree, only by looking into that file we can advise properly

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Recent thread about joining surfaces of a KCS hull:

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Yup the only issue was of tolerance. Godd i was so frustrated by the way everybody thanks very few times i saw such a active community