RE: Joining Steel rod...How?
Chemie, That's a very good job you did!
If I may suggest: Trim off the wire ends sticking out then tap whatever nub remains down and away by placing the completed joint firmly against a solid object (like a vise, which act's as a "bucking" anvil) as you strike with a hammer. Coat your finished assembly with oil and wipe excess off. These type solder joints tend to rust up over time unless protected.