how to merge the many surfaces into one or two surfaces

i have a blade model in iges and solid has so many surface can u help me in merging the surfaces. and please tell me the method also.
thank u

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2 Answers

You already have a single Surface. The meshing is creating the Problem.
Can't you ask whoever provided the 3D model to give you a non meshed Surface ?

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The Import Diagnostic tool identifies and repairs a missing surface along the edge of the model.

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