You bought three gold chains. You put them on. Five minutes later, they’ve twisted into a knot that takes ten minutes to undo. This isn’t bad luck — it’s bad geometry. Tangling happens when chains fight each other. Fix the physics, and the knots disappear. 1. The 2-Inch Length Gap Rule This is the single most important rule. If two chains are within 1 inch of each other in length, they will tangle. Period. The solution is simple: every chain in your stack needs at least a 2-inch difference from its neighbor. Here’s a working stack that stays flat all…