Originally Posted by Nessism
Generally, cast lugs are better due to the improved dimensional accuracy as you noted. Strength is not really a factor either way since the lug is not a highly stressed part.
agreed. cast lugs raise the bar of quality, tolerance-wise.
they also allow one to keep in step with the times by using
tubing with O.S. dimensions, thereby opening up the options
for all involved. that said, the lug is a "holder". the quality
of the joint is dependent on the interefernce fit and the
worker's skill. the lug material is not part of the equation.
ps: some people think of the cast quality of modern (btw,
hardly "modern" at all; they've been around since the 70s)
lugs as a shortcut which eliminates "handwork". i prefer
to think of cast parts as a starting point with which to make
a better frame.