Forming consistent chain links by hand is harder than it looks. Without a jig, every loop ends up a different size, the gap between ends varies, and the chain twists when loaded. This video demonstrates a deceptively simple solution: two guide pins mounted to a base plate, spaced to match the desired link inside diameter. Wire is fed between the pins and rotated, and each pass produces an identical link ready to be cut and welded shut.

It's a nice illustration of a broader fabrication principle — when you need repeatability, build a fixture before you build the part. The same two-pin approach scales to scrolls, eye terminations, and small hooks, and it works with anything from soft steel tie wire up to heavier rod, provided the pins are sized for the bending forces involved.

The clip is short on narration, so treat it as a visual reference rather than a full tutorial. The takeaway worth stealing: pin spacing controls inside diameter, pin diameter controls bend radius, and a stop block controls link length. Build those three variables into a small bench jig and you can produce a usable chain from scrap wire in an afternoon.