Okay, so you want to learn how to tig weld. Of all the welding processes, I like this one the best. To give you some of my favorite reasons, it provides a very clean and neat weld. It is most often used for things where the weld can be seen, so it is vital that the weld is very clean and aesthetically pleasing. It does take some practice to master, but it is worth the time you put into it. It should not be missed either, it is the highest paying process other than underwater welding. In most places, you can find a job that starts out making about $14 to $17 per hour, but keep in mind that your welds must be of high quality.
Here are some basics of TIG welding. First, you must have all safety equipment, most importantly your welding cap. I will get 11 or darker shades because the light is very bright and can hurt your eyes if not protected by the correct shade. Next you will need Tig welding gloves, these are thin leather gloves, do not wear thick gloves as you need to be able to pick up the rod and torch. Be careful, really with aluminum, do not touch it after welding, it will not show the heat on the work piece and you may forget it is hot and you will burn your gloves and hands. I once burned my fingerprints off after picking up a part after welding, where was my head that day? You will need a good welding coat, the welding paint used for Tig is very light, which is great because it is very hot inside in most places.
I would say that 90% of Tig welding is done on a table where you can sit and do the welding, which is another advantage of Tig welding. Now, you will hold the flashlight in your hand and place your foot on the pedal on the floor to control the heat. When you depress the pedal, it will get hot and when you release it will get cold. To get the arc, you must hold the flashlight about an eighth of an inch from the table and then depress the pedal. Now to weld aluminum, you need to set the welder to AC and the rest will be on DC in most cases. AC and DC power. Check to make sure the machine has been set up correctly before starting, you want a nice weld not a big hole.
Hold the torch at 70 or 80 degrees and hold the bar at 15 degrees. Practice the pedal, making sure the torch is one-eighth of an inch from the workpiece. Pedal until you see a puddle, which should be a quarter-inch circle, add a filler rod to the puddle the moment it forms and pull it out, then pull up on the pedal to freeze the metal, then repeat to form a row of welds that look like a row of pennies unfolded in an even fashion. This is a great way to practice heating and adding rods. There are other methods, but when you first start, this is the best
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