ArraynI added a solid sphere at the intersection of the tubes and made the diameter larger (1.25) than the tubes (1.0).nI used the sphere with the Split Body tool to trim the tubes back to a common surface. Then I added a plane to slice a face into the four spheres. Then I selected the face of the sphere and used Copy/Paste to create a surface. Then I deleted the solid bodies. Then I used Combine to unite all the surfaces.nIn my initial reply I suggested you could use Bonded Contact to connect edges of one part to the face of another part if the geometry won't merge. That would keep the tubes as close as possible to the original shape.nComplex intersections like four or five tubes intersecting sometimes creates trimming operations that fail. That is why suggestion #3 is sometimes needed.n