Method for making spacer structures, each spacer structure being made by joining at least one longitudinal element , preferably at least one pair of longitudinal elements suitably spaced and parallel, to at least one transversal element , preferably to a plurality of transversal elements appropriately spaced and parallel, characterized in that it comprises the steps of: (a). providing a first supply assembly and a second supply assembly for supplying said longitudinal elements along a longitudinal direction (A), each comprising at least one supply device for a said longitudinal element ; (b). arranging along a transversal direction (B) to said longitudinal direction (A) an insertion channel for a transversal element , an insertion assembly for inserting at least one said transversal element at a time into said insertion channel , and a cutting assembly associated with said insertion assembly , for cutting said transversal element inserted, in correspondence of a cutting plane transversal to said insertion channel ; (c). providing a joining assembly configured to cooperate with said first supply assembly and/or with said second supply assembly , comprising at least one joining unit for joining one said longitudinal element to one said transversal element ; (d). forming a first spacer structure by the cooperation of said first supply assembly , said insertion assembly , said cutting assembly and said joining assembly ; (e). releasing said formed first structure ; characterised in that said cutting plane delimits an operating area inside which said spacer structure is formed at step (d), and a drop-off area for at least one of said first supply assembly and said second supply assembly of said longitudinal elements; the method further comprising after releasing said formed first structure the steps of: (f). moving said first supply assembly along said transversal direction (B) into said drop-off area and (g). moving said second supply assembly along said transversal direction (B) inside said operating area to a desired position; (h). forming by means of the cooperation of said second supply assembly , said insertion assembly , said cutting assembly and said joining assembly a second spacer structure , while said first supply assembly is located into said drop-off area , outside said operating area . (a). providing a first supply assembly and a second supply assembly for supplying said longitudinal elements along a longitudinal direction (A), each comprising at least one supply device for a said longitudinal element ; (b). arranging along a transversal direction (B) to said longitudinal direction (A) an insertion channel for a transversal element , an insertion assembly for inserting at least one said transversal element at a time into said insertion channel , and a cutting assembly associated with said insertion assembly , for cutting said transversal element inserted, in correspondence of a cutting plane transversal to said insertion channel ; (c). providing a joining assembly configured to cooperate with said first supply assembly and/or with said second supply assembly , comprising at least one joining unit for joining one said longitudinal element to one said transversal element ; (d). forming a first spacer structure by the cooperation of said first supply assembly , said insertion assembly , said cutting assembly and said joining assembly ; (e). releasing said formed first structure ; (f). moving said first supply assembly along said transversal direction (B) into said drop-off area and (g). moving said second supply assembly along said transversal direction (B) inside said operating area to a desired position; (h). forming by means of the cooperation of said second supply assembly , said insertion assembly , said cutting assembly and said joining assembly a second spacer structure , while said first supply assembly is located into said drop-off area , outside said operating area . <EOS>