Method for producing an external horological element (100) which is a heterogeneous component, according to which a primary cavity (10) is produced in a structure (1), only the periphery of this said primary cavity (10) is re-machined or laser machined, which primary cavity (10) is filled with a second material that is different in appearance from the first material in order to produce a primary insert (2), where the bottom of this said primary cavity (10) is left rough before being filled with said second material, and, in the thickness of this primary insert (2), a secondary cavity (20) is produced, which is filled with a third material that is different in appearance from the first material and/or from the second material in order to produce a secondary insert (3).

A process for blanking an applique for a watch dial, comprises a step of blanking with a laser beam a first part of the outline of this applique, defining a pointed zone or/and a thin groove of at least a first hollow or/and the point or/and the drawn-out portion of at least a first projecting part, and a step of blanking by means of a stamp a second part of said outline which is complementary with the first part. This hybrid blanking technology makes it possible to obtain appliques having, at the end of the blanking process according to the invention, an outline which defines at least one hollow having a pointed zone or/and a thin groove or/and which defines at least one projecting part forming a point or/and a drawn-out portion with configurations and particular dimensions that cannot be obtained by blanking merely by stamping.

The invention relates to a method for bonding timepiece components, comprising applying an adhesive to a first and/or second timepiece component to be bonded to one another, and depositing an adhesion layer onto at least one of the first and second components to be bonded by spraying a primer composition in a localised joining area followed by the solidification of the primer composition. The adhesion layer is deposited prior to the application of the adhesive if the adhesive is applied to the one or more same components as the adhesion layer.

A method of fabricating a decoration provided with at least one attachment includes forming an envelope of material, the envelope including an external surface and an internal surface, and the external surface including a visible embossed part of the decoration, forming the at least one attachment, and fastening the at least one attachment directly and permanently against the internal surface of the envelope of the decoration.

An applique is intended to be affixed to a timepiece dial, and includes at least one foot portion having a first end attached to the applique and a second, free end, the foot portion being arranged to be capable of insertion into a hole provided in the dial. The foot portion includes, on the side of the free end thereof, a plastically deformable area arranged to form, after deformation, once the foot portion is inserted into the hole in the dial, at least one locking area of the foot portion on the dial.

A method for fabricating an applique for horology including a visible upper surface, and a lower surface from which protrudes at least one securing foot: a rough piece is made as a straight workpiece; this rough piece is deformed to form a blank so as to form an upper curve; this blank including this feet is machined; this blank is mounted on a tool having a support surface complementary to the lower surface of this blank, a recess for housing each foot, gripping means and/or an adhesive for securing each blank; the upper curve of this blank is machined with at least one final diamond-polishing operation to form this upper surface.

For example, an escape gear portion as a watch component includes a substrate containing silicon as a main component, and a light reflecting layer including a first silicon oxide layer, a silicon layer, and a second silicon oxide layer that are stacked, in this order, at the substrate, wherein, when the light reflecting layer is viewed in plan view, the light reflecting layer includes a first region and a second region, and a thickness of the silicon layer in the first region is different from a thickness of the silicon layer in the second region.

A decorative piece includes a support made of a material having no usable plastic deformation in which at least one hollow is arranged. The hollow is filled with a first material forming a substrate in which at least one housing is arranged. The housing is arranged so that at least one aesthetic element is housable therein. The substrate further includes a gripper elastically deforming to retain the aesthetic element in the housing. The gripper further includes at least one setting element. A method for setting an aesthetic element on a support includes taking a support provided with at least one hollow, taking at least one aesthetic element, filling the hollow with a first material, making a setting hole and a gripper in the first material, and setting the aesthetic element by placing it in the hole and by deforming the gripper so as to retain the aesthetic element.

A method for fabricating a composite component for horology or jewellery including making a base from a first material, with a first visible apparent surface, and a first support surface; a structure from a second ceramic, or sapphire or at least partially amorphous material, with a second apparent surface and a second support surface, including a through bore machined over the entire thickness thereof; at least one insert made of a third material, for each through bore, and arranged to fit together in a complementary manner with this through bore; bonding this base and each structure to each other, with each first support surface and each second complementary support surface bearing against one another; securing each insert with its respective through bore.

A method for fabricating a composite timepiece or jewellery component: a base is made in a substrate with an apparent surface remaining visible; each visible apparent surface is mirror polished; each polished apparent surface is coated with a first transparent or coloured semi-transparent layer of a first material in a dry process, or PVD or CVD or ALD process, or lacquering or zapon varnish process; a decorative element is affixed and bonded to an external surface of the first layer; the first layer and each decorative element is coated with a second layer of a transparent treatment material in a dry process, or PVD or CVD or ALD process, or lacquering or zapon varnish process.