A method comprising: (i) forming a reinforcement device by the following steps: forming a first member (1) and a second member (2), applying an adhesive (3) to the first member (1) and the second member (2), attaching at least one connecting feature to the first member (1), the second member (2), or both, bringing the first member (1) and the second member (2) together to form a clam-like structure, locking the first member (1) and the second member (2) with the at least one connecting feature, forming a first encasing member and a second encasing member, attaching the first encasing member to the second encasing member to form an encasing around the clam-like structure, (ii) exposing the reinforcement device to electrocoating, wherein the adhesive expands during the electro coating and bonds the first member (1) to the second member (2) and bonds the clam-like structure to the encasing.