A method for the manufacture of razor head assemblies, comprising: - providing a sub-assembly comprising:. a molded plastic housing having a front part and a rear part, a first lateral part and a second lateral part, said front, rear, first and second lateral parts defining a hollow space between them, said housing having a top face having a window mouthing into said hollow space, and an opposed bottom face, said housing further comprising elastic support members extending in the hollow space,. at least one member elastically supported by at least one elastic support member, and having an elongated edge running from said first to said second lateral faces, and accessible through said window, wherein providing a sub-assembly further comprises holding said housing in a nest, and wherein the method further comprises moving the nest through a plurality of processing stations where respective steps of the method are carried out, including: - providing a pre-clamp, made of a formable material, and having a U-shape with a first and a second parallel leg portions joined by a transverse base portion, - assembling the pre-clamp to the sub-assembly, by placing the first and second leg portions on either side of the hollow space with the base portion extending across the edge of the member, - maintaining the pre-clamp with the sub-assembly at least during deforming the leg portions by placing a holder in contact with the transverse base portion at a settable pre-defined position with respect to the housing, such that the holder contacts only an upper clamp surface - -deforming the first and second leg portions to cooperate with the bottom face of the housing to hold the member in the housing. - providing a sub-assembly comprising:. a molded plastic housing having a front part and a rear part, a first lateral part and a second lateral part, said front, rear, first and second lateral parts defining a hollow space between them, said housing having a top face having a window mouthing into said hollow space, and an opposed bottom face, said housing further comprising elastic support members extending in the hollow space,. at least one member elastically supported by at least one elastic support member, and having an elongated edge running from said first to said second lateral faces, and accessible through said window,. a molded plastic housing having a front part and a rear part, a first lateral part and a second lateral part, said front, rear, first and second lateral parts defining a hollow space between them, said housing having a top face having a window mouthing into said hollow space, and an opposed bottom face, said housing further comprising elastic support members extending in the hollow space,. at least one member elastically supported by at least one elastic support member, and having an elongated edge running from said first to said second lateral faces, and accessible through said window, - providing a pre-clamp, made of a formable material, and having a U-shape with a first and a second parallel leg portions joined by a transverse base portion, - assembling the pre-clamp to the sub-assembly, by placing the first and second leg portions on either side of the hollow space with the base portion extending across the edge of the member, - maintaining the pre-clamp with the sub-assembly at least during deforming the leg portions by placing a holder in contact with the transverse base portion at a settable pre-defined position with respect to the housing, such that the holder contacts only an upper clamp surface - -deforming the first and second leg portions to cooperate with the bottom face of the housing to hold the member in the housing.