How to MIG Weld like a Pro
Prepare the tools and materials you need. Make sure the valve connected to your shielding gas is open and that you have about 20 cubic feet per hour of flow set. Your welder should be turned on and the grounding clamp should be fastened to your welding table or to the metal you’ll use. Speaking of the metal, it should be clean. The metal edges must be ground as well.
Create a bead. Practice first (if you’re a beginner) by using a scrap metal and making a weld on its surface in a straight line. Then proceed with laying a bead. You need to lay beads which are one or two inches long. Don’t make it too long; it’ll heat up and can warp. The motion you would want to perform is that of the number 8 figure. You can also make small zig zags with the welder’s tip. It’s safe to say beading is just like weaving two metal pieces together.
Grind your weld. Grinding down the weld and smoothing it out will make your weld look more presentable. If you don’t really give a hoot about how it looks, you can skip this step. You can do accomplish this step by using a grinding wheel and an angle grinder. Be careful not to grind through the metal. Maximize the use of your angle grinder and don’t grind one part of the metal too much. Mind you, this step will require a lot of time, so be sure you’re patient enough. Also, remember to wear an ear protection, a full face mask, and a respirator.
Change the tip of the wire. When you are generating too much heat or when you’re too near to your metal, the tip of the wire can weld itself on the tip of the welding gun. You’ll know you need to change the tip when the wire no longer comes out of the gun. Before replacing the tip, however, remember to turn off the welder first. After this step, you can use the welding gun again.
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