Making a minute-jumper pivot pin for calibre 861

In rare cases, the minute-jumper pin in calibre 861 is broken because a watchmaker has carelessly pressed the bridge onto the work surface, for example to clean a bearing with pegwood.

This engraved cock is a representative example of components expensive enough to justify the working time involved in repairing them by making a pivot pin.
A pivot pin can be made better than new from silver steel or from pivot steel already hardened and tempered to blue. This is a traditional turning job that every watchmaker should master halfway through their training.

Pivot pin and cock in the photograph