How to weld

Learning How To Weld

Welding opens a whole world of possibilities to your projects. You can learn how to weld at home with a cheap welder, scrap metal and some instructions.

Tack Welding

Tack welding is an important part of the overall weld process. It helps to ensure your finished product will be high-quality and accurate. It involves placing small tack welds throughout the component metal pieces before the actual welding takes place. This stabilizes the welding position and orientation to prevent problems like overturning work pieces or improperly attached work. It makes your equipment easier to use and can be used as a replacement for fixtures.

How to weld

Tack welds have been designed to hold metal pieces in position, minimizing distortion. This will ensure that the pieces stay in their original positions once the final weld has been made. It is important to note that tack welds can cause distortion if they are applied incorrectly, so it is important to practice on scrap metal before using them for your project.

Another potential problem with tack welding is that it can lead to breakage of the metal if it is moved before it has completely cooled. Tape can be used to hold the pieces in place while welding to prevent this.

Welding Positions

Welders use a combination of numbers and letters to indicate the welding position. They can choose between flat, horizontal and vertical positions. The position that is chosen depends on the kind of weld that is to be performed. The welds can be butt, groove, or fillet.

The flat position is the easiest to use and manage. This position allows butt, groove, and fillet welds.

The axis of a weld is horizontally positioned in the inclined welding position. This is a very manageable position for welding, but you must use it with caution because gravity can affect the metal puddle causing it to sag and drip. This welding position is often used for pipe welding and on structural components that require a horizontal seam. The vertical position can be difficult to work with. This position is ideal for groove and fillet welding, but requires a lot of skill.


In Manual Metal Arc welding, the electrode is a metal stick covered in flux that you strike with a hammer to ignite and melt your weld. You can also use a wirebrush to remove slag in between passes, ensuring that only pure molten steel is joining the two pieces of metal.

When starting out, it’s important to keep your arc length short. Your arc should be placed at a distance that is about the same diameter as your electrode (for instance, a 2.6mm general purpose HYPERARC electrode). If you’re a beginner, an arc that’s too long can cause more spatter and will often break off the electrode because of the heat it generates.

It’s crucial to set your amps properly. If you are working with a higher current, the arc can be intense and penetrating, causing an uneven weld or even burning holes in the bead. You will also notice that the electrode is burning faster than usual and emitting more fumes. This is an indication that your amperage may be too high.

Welding Rods

When selecting a welding rod size, a good rule of thumb is to select a diameter that is half as thick as the base metal. This will ensure that the arc is kept away from the base material, preventing wasteful filler metal.

Professional welders know how to accurately judge the arc’s length, which is important for quality welds. You’ll hear it crackle and the weld bead deposited will be thin, but strong.

When deciding which type of electrode to use, consider the weld position as well as the material. For example, medium coated rods can be used in all positions and they are easier to remove the slag than other types.

If you’re using low-hydrogen electrodes like 7018, remember to keep them in a rod oven to keep them moisture-free. They’ll develop porosity problems or wormholes if you don’t. You can also buy welding rods that are color-coded for different purposes. For example, yellow for thorium and red for zirconium. These are often used in TIG welding, which requires a more precise weld.

Welding Tips

Welding is one of those skills that can seem intimidating for a beginner. Learning to weld is not difficult. With a little practice and a few helpful tips, welding can be a rewarding experience.

A good ground connection can make or break your welding process. If your earth is dirty or your clamp is not positioned correctly, it can cause your welding process to be unstable. An unstable welding process will result in lots of spatter and porosity on thinner materials.

A second tip is to keep the stickout (the distance the rod sticks from the nozzle) short. This will help you to maintain your arc stability and avoid excessive spatter or lack of fusion.

It is important to ensure that your electrodes are the right size. Using an oversized contact tip will cause the wire to wander loosely. This can cause heavy spatter or a lack in fusion. It can also cause the tip of the welding rod to wear out more quickly. Make sure to check the electrode size for a proper fit before starting to weld. This can save you time and frustration.

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