Lugged Steel Frames?
I'm mildly curious about something, namely: how exactly are lugged (steel) frames assembled?
I assume the lugs are welded somehow, but am not really sure how you'd put the whole thing together. And no, I'm not going to try this at home. :D I'm merely wondering how they're made. |
lugged frame
I've built several lugged frames. You polish the outside end of the tube and the inside of the lug, insert the two together, and using a torch, high temp silver solder together.
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Ok, so do you coat the end of the tube with a little bit of solder, hit the lug with the flame, and the solder melts & forms the bond?
I assume you also need to clean up the lug after that? Or do you just paint over it. (FYI I've done a little bit of brazing in my time, nothing remotely like building a frame though.) |
Check out Mercian's web site. They don't go into alot of detail about it, but it should give you some idea.
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Most British builders use brass solder rather than silver solder. Some, like witcombe, set up all the joins, then do the whole lot in one fell swoop in a furnace.
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Originally Posted by Bacciagalupe
(Post 4911300)
Ok, so do you coat the end of the tube with a little bit of solder, hit the lug with the flame, and the solder melts & forms the bond?
I assume you also need to clean up the lug after that? Or do you just paint over it. (FYI I've done a little bit of brazing in my time, nothing remotely like building a frame though.) |
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