MIG welding feels a portion contrary to the operator than stick welding does, so it is choice to be prepared.Exercise the right wire. Welding wire comes in a few sizes. Generally, big jobs involving thick metals want .045" or .035" size wire, and very thin metals are happy with .030" or .024" wire. Also, solid welding wire is to be used with gas applications, while flux-cored wire can be used as a stand-alone in MIG machines where no shielding gas is available.
Accumulate the right stick-out. The expression "stick-out" refers to the bigness of wire protruding from the confine of the welding gun while you are laying the bead. In most circumstances, site for a quarter-inch of stick-out for the capital results. The longer the stick-out, the cooler the weld. Lifting the gun from the metal emphatically reduces the amperage and heat applied. Conversely, Stirring the gun closer Testament elaboration both amperage, and heat, on the contrary Testament not generate agreeable, brawny welds. Whether the gun gets extremely hurried to the metal, it could stick to the drudge.
Wire Selection
As with any endeavour, experience Testament always convalesce your skills, nevertheless going into your ahead MIG weld with some basic dope is a abundant doctrine. Commemorate, don't excite discouraged provided your welds don't study crack the aboriginal infrequent times. MIG takes a while to memorize, all the more though it appears dishy facile.
Stick-Out
Use aluminum wire for aluminum, and stainless for stainless steel welding. Mixing the wires up for different applications will net poor results.Gun Position
Welding gun position affects the process. Best results are seen when holding the gun at a 45-degree angle. There are two ways to do this. You can hold the gun facing toward the weld direction, which will result in more heat, and deeper penetration. This technique is known as "pushing" the weld. Conversely, holding the gun away from the weld direction will produce less penetration for thinner metals, and is known as "pulling" the weld.
Clean Ground
Clean the ground surface. If the ground clamp is attached to painted or rusty metal, the weld will suffer. Use a grinder or a wire brush to score the area where the clamp is to be attached to ensure a good clean contact. A dirty ground will result in popping and spattering, and will prevent the welder from operating at the power it is set to.
Safety
Keep safety in mind. Never weld without a protective welding hood, because the harmful UV rays can quickly damage your eyes. Never weld near flammable objects to prevent a fire. Route the welding leads from the welder to the metal in such a way that they won't be tripped on by someone moving around the area. Wear thick leather gloves to protect your hands from heat, besides as a leather-sleeved welding jacket and long pants. Steel toed boots are also recommended.
