I feel Ya, but that's mass production, & the processes used at the time. Now, lost-foam method & others, have increased quality & control over the casting process. As stated by another member, it wasn't uncommon to have a bit of wire exposed during pattern filling, or during the pour. That is welded into the casting at that point. Imagine pulling hot castings out of the box, to bury/let cool, then knocking the green sand out. Cars are rolling down the line, the machining station is waiting for the raw casting, & someone is wrestling w/a pair of pliers on a wire that is part of the casting. Probably get kicked out of the process rather quickly, being that they were intended to be left there to begin with.
