THE CASING CUSHION
What is a casing cushion used for?
The casing cushion is a Bench accessory designed to receive and hold the watch Case during the delicate fitting and removal operations carried out between the Movement, the Dial and the Case. Designed as a surface that is both soft and stable, it prevents scratches, impacts and deformations likely to alter the appearance of the Case components or the flatness of the External parts (case, dial, hands).
Its most common shape is circular, with a diameter adapted to the dimensions of the piece to be supported. It generally consists of an outer cover made of leather, suede, or natural fabric, filled with soft yet relatively dense materials that provide both ballast and adjustable support comfort. This density gives the cushion a mass that prevents it from shifting unintentionally on the bench while allowing a slight compression of the material when the horologist applies pressure on it.
The main use of the cushion is during the final Assembly operations: casing the movement into the Case middle, fixing the dial, screwing the Case back or adjusting the Crown on the winding stem. Depending on the operation, the case is placed with the crystal facing down or up; in both cases, the cushion simultaneously ensures its protection and immobilization, freeing both hands of the horologist to handle the tools.
Several variants coexist depending on the needs of the bench: small-diameter cushions for wristwatches or larger cushions for pocket watches.
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