We use semi-automatic spot-welding machines for the production of metal enclosures at Pulsar. The welding process takes place by concentrating heat and pressure in a small area. The first electrode is placed on the worktable, the second is, spot electrode, placed on a movable arm. As a result of the point pressure and the flow of an appropriately selected current, two sheets of metal are permanently connected together. This method has many advantages, including that it can be used to weld different types of metals and their thicknesses. The presented welding machine is one of several used in Pulsar's production lines. The selection of the appropriate one is related to the design of the enclosure to be made.