The part is made in 2 steps. The first one needs one rotating jig with two positions. The spot welding is made by 2 robots: one robot mounts the welding clamp and welds the part staying on the jig. The second robot mounts a gripper and finishes the welding phase on the free-standing part by means of a welding machine on the floor. The upload is automatic: the third robot deploys the finished part on the conveyor. Before uploading, the second robot screws one M6 nut by capacitive discharge welding. The load is done manually by one operator.