Check out this welder/sculptor Kevin Caron. He works primarily in stainless steel to create free-standing kinetic sculptures, like the ones below. The following video shows how he creates one of his railroad tie sculptures (like this one), from beginning to end. Enjoy!
The following are two of my favorites: an unfinished staircase reaching up into the heavens, and a hand tree– literally, a tree with hands for leaves.
For videos of Kevin making these and other sculptures, you can go to his YouTube account here –>