Originally Posted by LexLeroy
Here's the daughter's bike so far - brass fillet brazing for some of the lugs and then silver brazing the lugs to the tubes. The thing behind the bike is the frame fixture that I built to hold all of the pieces together for pinning and brazing.
And here's two of the home-made fillet brazed lugs, shown with a production investment cast lug, prior to being silver brazed into the bike.
Brazing with oxy-fuel is fun but I'm pretty stoked about learning TIG... looking forward to lots more conversations in this thread.
Beautiful looking, but there could be a problem with them. Brazed joints work very well when stressed/loaded in shear (lap joints), but not so well in tension. Tension is where welding shines. Your lugs appear
to me to relying on the tensile properties of brazing, and they may fail.
Well made brazed joints have lots of overlap/shear area, as do well made adhesively bonded joints.