How Hot Is A Plasma Cutter? Is It Hotter Than the Sun?

Why is metal so hard to cut? Typically, electrically conductive materials are sturdy. Cutting then can be a challenge, especially if you don’t have the right tools.

Cutting metal sheets with a mere blade is tedious and energy draining. Here lies the reason, doing it manually requires a lot of energy. The sad news is that achieving a quality end product is not guaranteed.  

A hot plasma cutter is a friend to the rescue. It easily splits even thick sheets of metal. All you need is to produce hot plasma, which will split the metal faster and efficiently. But how hot is a plasma cutter? Let’s find out.

Related: Best Plasma Cutters

History of Plasma Cutting

Plasma cutting is an effective and efficient way to cut metal with the use of intense heat, high pressure gas, and a touch of gas. The method was first used in 1960s by Dr. Robert Gage, who was looking for a way to cut up metal quickly without the use of torches.

Without many years of development, he made what would become the first plasma cutter. Plasma cutting machines are now popular for their speed and accuracy in cutting through thick materials.

How hot does a plasma cutter get?

Plasma cutters are a type of welding tool that use an electrically charged gas to create a high-temperature plasma beam. The temperature can reach up to 40,000 degrees Fahrenheit, making it the perfect tool for cutting through metal.

The beam is able to quickly and cleanly cut through even the thickest pieces of metal, making it a popular choice for metalworkers and welders.

How does a plasma cutter work?

Plasma cutters use a gas, such as nitrogen or oxygen, to create a plasma arc. The gas is ionized and creates a high-temperature plasma. The plasma is then directed at the workpiece, which melts and cuts the material.

The nozzle on the plasma cutter controls the shape and size of the plasma arc. The distance between the nozzle and the workpiece also affects the size of the arc.

The amount of heat applied to the workpiece determines how quickly it will melt or cut. The operator can adjust this heat by changing the speed of the cutter or by moving it closer or further away from the workpiece.

What are plasma cutter flames?

A plasma jet may reach high temperatures of up to 40,000 degrees Fahrenheit. This flame pierces through the metal workpiece, thereby blowing off the molten material leaving a well-trimmed metal piece cut. 

  • A cutter has a capacity of converting a three-phase or single-phase AC line into a smooth and constant DC voltage of 200 to 400VDC. Therefore it needs high voltage to cut. 
  • A plasma cutter using nitrogen and argon mixture gases to cut tough metals such as thick aluminum and steel metal sheets.  
  • The voltage settings determine the speed of the cutter. 
  • For you to achieve maximum benefits, it’s crucial to maintain the correct voltage settings on your cutter.
  • The plasma cutter regulates the current output needed according to the type of material and its thickness. 

What safety precautions should be taken when using a plasma cutter?

Plasma cutting is a process that uses a plasma torch to cut through metal. It is a common method of cutting sheet metal and is often used in fabrication and manufacturing. Plasma cutting is considered a safe process, but there are some safety measures that should be taken to ensure a safe work environment.

The first step in ensuring safety while plasma cutting is to select the correct equipment for the task. The plasma cutter should be the right size and power for the job. It is also important to use the correct consumables, such as tips, electrodes, and gas nozzles.

In addition to using the correct equipment, it is important to follow the proper safety procedures. These procedures include wearing appropriate clothing and eye protection, keeping bystanders away from the work area, and using appropriate ventilation.

How is a plasma torch cooled?

A plasma torch is cooled using a water-cooled copper coil. The water circulates through the coil, absorbing heat from the plasma and cooling it. This keeps the plasma at a consistent temperature and prevents it from overheating.

  • A coolant helps tone down high temperatures, which might damage the plasma torch.   
  • Coolant has a very thin opening where it’s released into the back of the electrode. It then moves through at high speed in order to carry away heat with ease.   
  • After cooling the electrode, the liquid will circulate back into the torch’s body. It then goes through a different outlet in order to cool the nozzle.   
  • The process of swirling the coolant in the outer side of the nozzle makes the nozzle last longer.   
  • The process is repeated so long as the plasma cutter is in operation. 
  • It exits the torch and returns to the cooler as long as the machine is on.   

Is a plasma cutter hotter than the sun?

how hot is a plasma cutter

There is no definitive answer to the question of whether this machine is hotter than the sun. The sun is much hotter.

However, it is clear that a plasma machine can generate an incredible amount of heat. In fact, it can generate up to 40,000 degrees Fahrenheit. This level of heat is more than enough to cut through most materials.

Although a plasma regulates the amount of heat depending on the metal, a coolant can help tone down the excess heat of a plasma cutter. Here you will get 7 plasma cutter tips and tricks.

Can a plasma cutter electrocute you?

No matter how safe a tool may be, it’s always important to follow the safety guidelines that come with it. This is especially true, which can still shock you if you’re not careful. Here are a few tips to help keep you safe when using this machine:

  1. Always read the safety guidelines that come with your machine.
  2. Make sure that you are wearing the appropriate clothing and safety gear. This includes closed-toe shoes, long pants, a long-sleeve shirt, and gloves.
  3. Never touch the metal parts of the plasma cutter while it is turned on.
  4. Keep bystanders at least 10 feet away from the area where you are working.


Plasma cutters are an incredibly versatile tool that can be used for a variety of purposes. They are often used in the manufacturing and construction industries, but can also be used for DIY projects or repairs.

The temperature can vary depending on the make and model, but it typically reaches up to 40,000 degrees Fahrenheit. This makes it one of the hottest tools on the market, and it can cut through a wide range of materials quickly and easily.