Aluminum cores are pressed into outer steel hoop then welded in with (5 ea) 2" beads between 2 dissimilar metals as seen here on the back side of this NOS rim. Welds need to be broken to separate the hoop and then both pieces would need chemical stripping before being re-plated in this process. Expensive and I was told there are only a couple who will do this work now days. I was also told that if the aluminum core break or cracks when being removed from the outer hoop, the wheel is garbage.
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