In countries with good trades training programs, like Germany or Italy, manufacturers and the government work hand in hand to train the students for...
Luckily, in my state, these schools never went away- the community college system has strong trades programs in many fields, and has been expanding,...
I think this is true to a large degree- for instance, on our local metalworker email group, somebody asked about new round belts for their engraving...
I dont think you are going to have much luck soldering 1/8" or 3/16" round bar, with a standard home electrical soldering iron.
You could braze them...