Hi Robert,

re:
> You solution helps, but now when i do it with then it make this deformation surface. How i can
> avoid that i mean follow the curve without deformation.

It's just a fundamental geometric property that a shape traveling along a curve's centerline and offset some distance away from the center will expand or squish together as they go around a bend:



The amount of deformation is greater when the path has a tighter bend in it and when the offset distance from the center line is larger.

So you could either reduce the size of the objects or make the path bend less to reduce that deformation.

If you want to eliminate it then you would not want to use Flow after all and instead do something like mjs writes above - make non deformed objects by using Array curve, then build a tube along the path and boolean the shapes onto the tube.

- Michael