Method for decorating a mechanical part

A method for decorating at least one surface to be decorated (4) of a mechanical part, the method comprising and being implemented in order of the following steps of:

• taking the mechanical part to be decorated, on which at least one decoration element (2a, 2b) is sought to be produced according to a predetermined thickness and contour;
• depositing, on the at least one surface to be decorated (4) of the mechanical part, a masking layer (6) having a thickness that is at least equal to the thickness of the at least one decoration element (2a, 2b) to be produced;
• making, in the masking layer (6), at least one first cavity (14a, 14b) that coincides with the location on the at least one surface to be decorated (4) of the mechanical part where the at least one decoration element (2a, 2b) is to be produced, the at least one first cavity (14a, 14b) having a contour that corresponds to the contour of the at least one decoration element (2a, 2b) to be produced and defining a volume with the at least one surface to be decorated (4) of the mechanical part;
• following making the at least one first cavity (14a, 14b), making, through the at least one first cavity (14a, 14b) and into the at least one surface to be decorated (4), at least one second cavity (16) in the at least one surface to be decorated (4) of the mechanical part;
• filling the volume delimited by the at least one first cavity (14a, 14b) with a filling material in which the at least one decoration element (2a, 2b) is intended to be produced;
• and
• removing the masking layer (6),
• wherein the at least one second cavity (16) comprise a portion which is inclined relative to the at least one first cavity (14a, 14b),
• wherein the at least one second cavity (16) etched in the at least one surface to be decorated (4) of the mechanical part comprises means for anchoring the at least one decoration element (2a, 2b), and
• wherein at least one conical hole (22) is drilled in a bottom (24) of the at least one second cavity (16), this at least one conical hole (22) flaring out towards a rear surface (26) of the mechanical part, opposite the at least one surface to be decorated (4).

A method for decorating at least one surface to be decorated (4) of a mechanical part comprising the following steps of:

• taking the mechanical part to be decorated, on which at least one decoration element (2a, 2b) is sought to be produced according to a predetermined thickness and contour;
• depositing, on the at least one surface to be decorated (4) of the mechanical part, a masking layer (6) having a thickness that is equal to or greater than the thickness of the at least one decoration element (2a, 2b) to be produced;
• making, in the masking layer (6), at least one first cavity (14a, 14b) that coincides with the location on the at least one surface to be decorated (4) of the mechanical part where the at least one decoration element (2a, 2b) is to be produced, the at least one first cavity (14a, 14b) having a contour that corresponds to the contour of the at least one decoration element (2a, 2b) to be produced and defining a volume with the at least one surface to be decorated (4) of the mechanical part;
• filling the volume delimited by the at least one first cavity (14a, 14b) with a filling material in which the at least one decoration element (2a, 2b) is intended to be produced;
• and
• removing the masking layer (6),
• wherein, before depositing the masking layer (6), a first bonding layer (8) is deposited on the at least one surface to be decorated (4) of the mechanical part, to facilitate the bonding of the masking layer (6), and
• wherein, after depositing the masking layer (6) and before depositing the filling material, a second bonding layer (28) is deposited on the at least one surface to be decorated (4), in the locations where the at least one first and potentially at least one second cavity (14a, 14b;
• 16) are made, to facilitate the bonding of the at least one decoration element (2a, 2b).