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BURNISHING THE PIVOTS

To ensure the longevity of each component, all pivots are meticulously hardened and burnished, a process that makes the surface both denser and smoother. When combined with a minuscule amount of oil applied to our sapphire bearings, this significantly reduces friction, enhancing durabilty. Each pivot is burnished individually using a hand-operated tool. Constant checking with the micrometer caliper is required, to ensure the perfect dimension right down to a couple of microns. Burnishing for too long would result in a pivot that’s too small, leading to excessive play in its bearing stone, which can negatively affect its function. From the mainspring arbor to the escape wheel and balance wheel pivots, all undergo this careful process, ensuring optimal quality.