Originally Posted by riderx
Most lugged frames are butted. Butting has to do with the thickness of the tubing on the end. The lugs have to do with the joining process. Common methods to join bicycle tubes are lugs (brazed), welded and fillet brazing.
Most mid-to-high-end lugged frames are butted. None of the lugged frames of basic entry-level 10-speeds of the 1970s (Peugeot UO-8, Motobecane Mirage, Raleigh Record, Steyr Clubman, Nishiki Custom Sport, etc.) were butted.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069