Originally Posted by
JohnDThompson
Cast dropouts usually have external sockets for the stays rather than a tab that inserts into a slot in the stay. I've never tried welding a cast dropout, but I suppose success would depend on the material.
Cast Iron is supposed to be tough to weld, but not impossible.
However, I'd imagine the new dropouts one can buy are cast steel, or cast stainless steel, and should be weldable. I would think that many are designed to be either welded or brazed for assembly.
Aluminum might be different. Vintage cast aluminum could be an issue. New cast (or extruded) aluminum would all be intended to be welded.
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Glad the weld and the project turned out well.