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what is scratch start tig

What is Scratch Start TIG?

What is Scratch start tig welding and its benefits?

Scratch start Tig welding is a type of welding that uses a non-consumable tungsten electrode to create an arc between the electrode and the metal being welded. The heat from the arc melts the metal, which is then used to fill the joint between the two pieces of metal. To scratch start Tig weld, the welder must first prepare the area by cleaning it of any debris or contaminants.

Next, the welder must set up the equipment, including the power source, torch, and welding rod. Once everything is in place, the welder will strike an arc on the surface of the metal, using the torch to guide the electrode. After a few seconds, the metal will melt and can be used to fill the joint. Its welding is a standard method for welding aluminum and other non-ferrous metals. It is also used for welding in difficult-to-reach areas, such as inside pipe joints.

Its welding is popular for welders because it offers several benefits. Perhaps most importantly, scratch start TIG welding is much easier to learn than other welding methods. This is because it does not require expensive equipment or difficult-to-master techniques. In addition, its welding is much more versatile than other methods, making it ideal for various applications. Finally, scratch-start TIG welders are less likely to experience mental fatigue, meaning they can weld for more extended periods without experiencing problems. As a result, its welding is an excellent choice for novice and experienced welders.

When To Use A Scratch Start For TIG

Scratch start TIG welding is a great way to weld thin materials together, especially if you need access to a welder with an HF start. Scratch starting also works well on painted or rusty surfaces. When Scratch starts, you should use a small amount of filler rod and make sure that you have a good ground connection. You may also want to experiment with different electrode tips to find the one that gives you the best results. If you are having trouble getting a good arc, try using a more extended electrode. Remember to keep your Scratch starts as small as possible to avoid melting through the material.

Advantages and Disadvantages of scratch start TIG


When it comes to TIG welding, there are two main types of starters: lift start and scratch start. Each has advantages and disadvantages, but scratch-start TIG welding is generally the preferred method. Its welders are easier to use and provide a more stable arc, making them ideal for beginners. In addition, Its welders are less likely to cause damage to the workpiece, making them ideal for delicate projects. However, lift-start TIG welders do have some advantages. They produce a hotter arc, making them better suited for thicker materials. In addition, lift-start TIG welders are less likely to cause porosity in the weld. As a result, raise-start TIG welders are often the best choice for experienced welders working on demanding projects.


While scratch start TIG offers several advantages, there are also a few disadvantages. One of the most significant drawbacks is that achieving a consistent arc can take much work. It can be particularly challenging for those new to welding or needing a lot of experience using TIG welders. In addition, scratch-start TIG can be slower than other welding methods, such as pulsed TIG or flux-cored welding. It is because the operator must stop and start the arc each time they move the torch, which can add to wasted time if you’re working on a large project. It is an excellent choice for those needing to weld thick materials or a precise weld. However, it’s essential to keep in mind that it does have its limitations.

How To Scratch Start A TIG Weld Correctly

When starting a TIG weld, it’s essential to ensure that you have a good arc. The best way to do this is to scratch from the weld. This involves touching the electrode to the metal and then moving it away, creating an arc. This method can be tricky, so practicing it before trying it on an actual welding project is essential. To Scratch start a weld, ensure the electrode is clean and dry.

Next, set the power level to low and hold the electrode close to the base metal. Touch the metal with the electrode and then quickly move it away, maintaining a small gap between the electrode and the metal. You should see a bright arc form. If the arc needs to be more brightly, increase the power level. Once you have a good arc, you can begin welding. Remember to keep the electrode at a slight angle to the base metal and move it in a smooth, fluid motion.

Scratch start tig setup.

The Scratch starting a TIG weld is the most common method to start the arc. Scratch starting is done by touching the electrode to the workpiece and then withdrawing it quickly while holding the trigger. As you retract the electrode, an arc will be established between the electrode and the workpiece.

Once the arc is established, you can continue to weld in the usual fashion. Scratch starting is often used when welding thin materials or when a very precise arc start is not critical.

A Scratch the torch.

Scratch start welding is a technique that can be used to weld metals together using a TIG torch. The process is relatively simple: first, the torch is placed against the metal to join. Then, the welder “scratches” the torch across the surface of the metal, creating a slight arc. This arc heats the metal, which melts and forms a weld joint. Scratch-start torches are an essential tool for any welder and can use on various materials. Thanks to their versatility, scratch start tig torches are an excellent choice for both experienced welders and those just starting.

Scratch Start tig kit.

Its welding is a great way to get started in the world of welding. The Scratch start welding kits contain everything you need, including a power supply, torch, and ground clamp. Its welding kits are available in both 120-volt and 240-volt versions. If you’re unsure which Scratch start TIG welding kit suits you, consult your local welding professional. Its welding is a great way to weld various metals, including stainless steel, aluminum, and cast iron. Scratch start welding is also excellent for intricate welds that need to be made in hard-to-reach places. Its welding kits are essential for any welder’s toolbox.


In conclusion, a welding process uses a tungsten electrode to deliver an electric current to the workpiece. This electric arc produces heat, which melts the base metal and allows the filler metal to be added. The main advantage of scratch start TIG is that it can be used on various materials, including metals that are difficult to weld. Additionally, this process is relatively forgiving, meaning it is less likely to cause damage to the material being welded. However, one downside of scratch start TIG is that it can be difficult to produce a consistent weld bead. Nevertheless, this process remains a popular choice for many welders due to its versatility and relative ease of use.


How to scratch start tig?

If you’re starting a welding project, you’ll need to know how to scratch start tig. Scratch starting is a great way to get a clean, consistent arc, and it’s relatively easy to do once you get the hang of it. Here’s a step-by-step guide:

1. Set up your welding machine and make sure all the connections are secure.

2. Place the electrode on the metal you’re going to weld.

3. Strike an arc by scratching the electrode across the metal.

4. Adjust the current and amperage to maintain a consistent arc.

5. Begin welding! Remember to keep the electrode at a 90-degree angle to the metal for best results.

With a bit of practice, you’ll be starting like a pro in no time!

What is the difference between Scratch Start and Lift Arc TIG?

It uses a high-frequency, high-voltage spark to create an arc between the electrode and the workpiece. The heat from the arc then melts the filler metal, allowing it to flow into the joint. Lift arc TIG, on the other hand, does not use a high-frequency spark. Instead, it uses lower voltage to create an arc between the electrode and the workpiece. Once the arc is established, the heat from the arc melts the filler metal and allows it to flow into the joint.

There are several key differences between scratch start and lift arc TIG:

  1. It requires a higher voltage to create an arc, while lift arc TIG only requires a lower voltage.
  2. It uses a high-frequency spark to create an arc, while lift arc TIG does not use a high-frequency spark.
  3. When using scratch start TIG, the electrode must be in contact with the workpiece before an arc can be created.

With lift arc TIG, on the other hand, the electrode does not have to be in contact with the workpiece to create an arc.



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