Process for manufacturing a hybrid timepiece component, comprising structuring at least one wafer (14) of a first micromachinable material so as to form at least one through-opening (15) within the wafer (14), said structured wafer (14) being intended to form a first part (4) of the hybrid timepiece component; and depositing a metal by electroforming, so that the metal extends through the through-opening (15) and over the two upper and lower faces of the wafer (14) as a single piece resulting from one and the same electroforming step, the electroformed metal being intended to form a second part (8) of the hybrid timepiece component.