Stainless steel watch cases are typically made through a process known as metal stamping. This involves the use of a press to shape a sheet of stainless steel into the desired form.
The process starts with a flat sheet of stainless steel that is cut into the shape of the watch case. This blank is then placed into a metal stamping press, which uses a combination of pressure and precision tooling to shape the metal into the desired form.
The tooling used in the metal stamping process can vary depending on the complexity of the watch case design. Simple shapes may only require a single punch and die set, while more intricate designs may require multiple sets of tools.
Once the metal has been stamped into the desired shape, it may be subjected to additional processes such as polishing, sandblasting, or brushing to achieve the desired finish. The watch case may also be engraved with logos or other design elements using a laser or other engraving tool.
After the watch case has been finished, it is typically fitted with a crystal, movement, and other components to create a complete watch.