Originally Posted by
WildRalph
Nice score! That thing looks very rugged! Is that a filet brazed steel frame? Just learning about filet brazing. And can anyone explain Schwinn "Electroforging?" Is it a weld, a filet braze, something in between?
Electroforging is a weld, but not in the conventional sense. There is an article on the Sheldon Brown site by Marc Muller that explains the process. Briefly, a "lug" and a tube are the two electrodes and when pressed together, sparks fly and a welded joint is formed.
https://www.sheldonbrown.com/varsity.html