Based on traditional marine hardware. 3D printed master. Lost wax cast in California and hand finishing in house. The sides can pass through each other when the slots are lined up precisely perpendicular. This kind of mechanism is also referred to as a gangent hook, kissing clip, or brummel hook. When I was a kid my father first showed me how to make them using bolt cutters and chain links. The cord is hand braided in house using a kumihimo loom. I splice the clasps in place using an original technique. The sides of the clasp can pass through each other when the slots are lined up precisely perpendicular. The tan cord is pigmented rather than dyed and will fade to pale white or grey (based on your lifestyle) over time. The other colors are all very stable. The yarn from which the cords are braided is polyester, dyed, spun, and waxed here in Maine. Lengths are measured with the necklace laid out straight, including the claps. All color options will stretch slightly over time.
How to use the Sister Clasps: