You are exactly right, sorta. It is milled from billet but they are the end cuts from making the A250 bases and A100 platters. The end cuts come from the mill at a slight angle by as much as 1/4" making them almost useless. We mill away all the bad and recover the good. That is how re-purpose what otherwise would be waste. So from making 400 platters and bases we end up with about 12 base-plates.

Cheers,
Spencer