Method for manufacturing a timepiece component

A manufacturing method comprising the successive steps of:

• providing a timepiece component;
• breaking the timepiece component into a plurality of pieces such that the plurality of pieces are separated from each other along at least one virtual plane that intersects a front face of the timepiece component;
• depositing the plurality of pieces on a support and creating a desired pattern to be reassembled, the pattern including interstices between the plurality of pieces of the timepiece component, and a shape of an entirety of a front face of the pattern is the same as a shape of an entirety of the front face of the timepiece component before the breaking the timepiece component;
• transferring the support into a mold adapted by hot forming and placing a preform on the plurality of pieces of the timepiece component, the mold, the support, the plurality of pieces and the preform forming an assembly;
• heating the assembly to a temperature higher than a vitreous transition temperature of the preform and applying a force on the preform to fill the interstices;
• and
• forming a reassembled timepiece component by cooling the assembly below the vitreous transition temperature of the preform, wherein a shape of an entirety of a front face of the reassembled timepiece component is the same as the shape of the entirety of the front face of the timepiece component before the breaking the timepiece component,
• wherein the timepiece component is a bezel of a watch, a back of the watch, a bridge of the watch, a plate of the watch, an oscillating mass of the watch, or a watch dial of the watch.