In Bill Smith’s book on construction of a skeletal clock, he states the click spring is made out of 1/16 brass sheet. Lay it out and cut it down. Then bend into the final shape that has a 1 9/16 radius. No details on how to do that. Just how does one go about bending it into a curve with such a radius? I tried light hammer strokes along the edge while clamped into a vise, which does bend it, but the bending is not continuous so it ends up with a bunch of humps. Ideas?