Are you looking for the best portable welding machine? It’s easy, just find a brand and price you like, then read a review or two. What most people don’t know is that there are several different types of these welders, and not all welders are created equal. Some will do an average job, while others will do a better job, which is what you want to be looking for. If you want the best portable welding machine that can do it all then you will need to take a look at what is available and determine what you want.
The two basic types of portable spot welders are electric or gas. Which one you choose depends on the amount of heat you want to generate and the quality of the metal you are working with. Electric welders generally have a cord to run from the wall unit to the base unit, while gas units are either propane or nitrogen fueled. You need to decide if you are going to purchase an electric or gas model because it will effect the quality of your work. Both varieties use electrodes to create the heat but the differences lie in the way the electrodes react with the raw materials.
Gas powered welders create a hot, intense and long lasting weld, while electric, small portable spot welding guns use compressed air to generate the heat and the electrodes are located in the center of the barrel. You will also see differences in the power output and voltage output of both types. You may want to get a model that produces a higher output so that you can do more work in less time. The more you can do in less time the better, but you also need to consider if you need to get a smaller or larger machine.
The KVA or large voltage option is the best choice for a portable spot welding machine, because it is able to weld thicker pieces of metal than the electric models do. If you are going to do a lot of welding jobs, then you are probably going to have a large variety of different metals to work with. If you choose a low voltage portable spot welder, chances are you will have to keep buying new batteries for it. The choice really comes down to how much you are willing to invest in your welding machine.
Gas portable welders creates a hotter arc and creates a much more consistent weld. It is also easier to learn how to operate this kind of machine compared to an electric model. The one drawback of using a gas welders is that the process can cause some health issues if fumes are present. Most welding shops use pure argon to fuel their machines, which is also a fire hazard. Portable KVA machines are not recommended for welding metal sheets as they generate too much heat.
The last thing we are going to discuss here is whether to get a portable, direct fit, or stand alone spot welder. With a Direct Fit, you get all the benefits of a stand alone machine, but you also have a much smaller footprint. If you are looking for a welder that can handle a larger volume of welding work, then a stand alone spot welding unit is what you need. The main downside of a direct fit weld is that it is limited by the size of the stainless steel sheet that it is going to be welding. Some people weld with both a stand alone and a direct fit welder, but the latter tends to give a much better quality weld.