[alip67]

hi
I want to mesh a 3D 2-pipe, but I have a problem
for this work, after creating 3 cylinders in +y,+x, and -x coordinates, I unite them, then I create a sphere with the same radius of cylinders, then I unite these two volumes, then I want to create 3 volumes that are look like cylinders in order to mesh them with a structural mesh. there is a similar work in the tutorial, as written in tutorial, I should create an edge,then create 3 faces, and then split my volume with each face in order to create my desired 3 volumes, but after splitting my volumes, I encountered a problem
my figure should be like these picturesfigures:Sans titre, and 2 pipe intersection)
but my work was like thisfigures:1, 2 , and 3)
please help me

[-mAx-]

I don't see any purpous of using the sphere, so forget it.
From your picture 2, you should achieve your work, by splitting the volumes into 3 separated volumes (you may use the 3 surfaces like your face.15)