How Everything Is Made on Instagram: "Steel chains may look simple, but they’re the result of a precise, multi-step manufacturing process designed for strength, consistency, and durability. It begins with high-grade steel wire, which is drawn through a series of dies to achieve an exact diameter. The wire is then cut into uniform lengths and bent into individual links. Each link is mechanically or electrically welded closed to ensure structural integrity, especially for chains designed to handle

Microsoft's Component Object Model ( COM ) - Introduction - Chapter1