Use of advanced Welding Equipment manipulators such as computerized plasma cutters can help reduce scrap through precise cutting. Decreased Variable Labor Costs A semi-automatic system has capacity to produce output, double that of a skilled labour. A fully automatic system can produce eight times the output of a skilled labor. When a skilled labor does not report to work, the producer's eight hours of production time are lost. By investing in automation and hiring a general worker to handle or supervise the process, a producer can decrease the variable labor cost. Welding is perhaps one of the most important processes when it comes to construction. Welding is like the glue for metal, meaning that it is the one element that helps certain pieces of metal stick together. The process of welding is pretty simple at its element. Two pieces of metal are joined together with a third, by means of being melted together with heat. There are of course different types of welding and therefore something different when it comes to how each process is executed, but other than that, there is nothing that goes beyond the way in which the process is conducted. The different types of welding and their processes There are a few main types of welding that are used by the engineering industry. One of the most popular types is shielded metal arc welding. This is also known as stick welding. In order for this to be a complete process, all that needs to be done is for an electrode to be melted onto a pieces of metal, thus making sure that they stick together. This is the most common process of welding, meaning that if you went to a trade school of some kind, you would be learning this method first. The next method is known as flux cored arc welding and it is the same as stick welding, except for a slight difference in the gun. It is a wire feeder gun and it feeds the electrode bit by bit onto the metal that it needs to adhere to. Then there is the matter of Gas tungsten arc welding. This uses a piece of tungsten to produce the weld. The area around it is protected by a shield of gas as opposed to a normal shield. When you do being the welding process, it is important to make sure that your welding gun has been on for a few minutes to ensure that it will have heated the electrode properly. Then you need to make sure that you cover your face and arm area with strong overalls. This will keep any metal splatter off your skin. Once you have assembled the pieces of metal that you want to weld together, make sure that you have got you welding gun ready. Press the electrode gently down onto the metal and lift it up again. Repeat this until you have a solid weld. Do not hold it down in one place for too long, because it will burn a hold through your metal. Wikipedia defines welding as "the fabrication or sculptural process that joins materials, usually metals, by causing coalescence", and the Blister Packaging Machine describes it as "a way to make high-strength joints between two or more parts." Both definitions are describing the process of fusing two metals together, which if done properly by professionals, imparts exceedingly great strength to the joint.