This one is the revert brother of Extrude Shape
Solidify will construct a geometry around the generator edge.
We could say that Tube Lines
is more or less a solidify modifier with a circle shape
You can also of course solidify a 3D text, which make 3 methods along with Extrude Shape
Hint : If you do so over a 3D 3D Text
, change this inside of it's parameters for better results.
When placed over a mesh, you'll see some glitches. We are aware of that but that's life.