How to use a Non Touch Pilot Arc Plasma Cutter for circle cutting?

Apr 27, 2026

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Sophia Taylor
Sophia Taylor
Sophia works in the R&D department of the company. Her innovative thinking and solid theoretical foundation have made important contributions to the development of new welding technologies and products.

Hey there! I'm a supplier of Non Touch Pilot Arc Plasma Cutters, and today I'm gonna share with you how to use this amazing tool for circle cutting. It might seem a bit tricky at first, but with the right steps and a bit of practice, you'll be cutting perfect circles in no time.

Getting to Know Your Non Touch Pilot Arc Plasma Cutter

Before we jump into circle cutting, let's quickly go over what a Non Touch Pilot Arc Plasma Cutter is. It's a high - tech tool that uses a non - touch pilot arc to start the plasma cutting process. This means you don't have to make direct contact with the metal surface to initiate the arc, which is super convenient and can help prevent damage to the cutter tip.

We offer a range of plasma cutters, like the 120 Amp Plasma Cutter. It's a powerful machine that can handle thick metals with ease. If you're looking for something more suitable for stainless steel, check out our Ss Plasma Cutting Machine. And for those who need a portable option, our Portable Mini Plasma Cutter is a great choice.

Preparing for Circle Cutting

Safety First

Safety should always be your top priority when using a plasma cutter. Make sure you wear appropriate safety gear, including safety glasses, gloves, and a welding helmet. The plasma arc can produce intense light and heat, so protecting yourself is crucial.

Set Up Your Workspace

Find a well - ventilated area to work in. Plasma cutting generates fumes, and proper ventilation will help keep the air clean. Also, make sure your work surface is stable and can support the metal you're cutting.

Prepare the Plasma Cutter

Check the cutter for any damage or loose parts. Make sure the gas supply (usually compressed air) is connected and working properly. Set the appropriate amperage based on the thickness of the metal you're cutting. Thicker metals require higher amperages.

Portable Mini Plasma CutterSs Plasma Cutting Machine

Tools You'll Need for Circle Cutting

  • Compass or Circle Cutting Guide: This is essential for creating the perfect circle. You can buy a specialized circle cutting guide for your plasma cutter or use a simple compass.
  • Measuring Tape: To measure the diameter of the circle you want to cut.
  • Marker: To mark the circle on the metal surface.

Step - by - Step Circle Cutting Process

Step 1: Mark the Circle

Use your measuring tape to determine the diameter of the circle you want to cut. Then, use a marker to draw the circle on the metal surface. Make sure the line is clear and visible.

Step 2: Attach the Circle Cutting Guide

If you're using a circle cutting guide, attach it to your plasma cutter according to the manufacturer's instructions. This guide will help you maintain a consistent distance from the center of the circle as you cut.

Step 3: Set the Cutting Speed

The cutting speed depends on the thickness of the metal and the amperage setting of your plasma cutter. Generally, slower speeds are better for thicker metals. You may need to do a test cut on a scrap piece of metal to find the optimal speed.

Step 4: Start the Plasma Cutter

Turn on the plasma cutter and wait for it to reach the proper operating temperature. Once the arc is established, position the cutter at the edge of the marked circle.

Step 5: Begin Cutting

Slowly and steadily move the plasma cutter around the circle, following the marked line. Keep the cutter at a consistent distance from the metal surface. It's important to maintain a smooth and even motion to ensure a clean cut.

Step 6: Finish the Cut

Once you've completed the circle, turn off the plasma cutter and let it cool down. Remove the cut circle from the metal sheet.

Tips for a Perfect Circle Cut

  • Practice Makes Perfect: Don't expect to get a perfect circle on your first try. Practice on scrap metal until you get the hang of it.
  • Keep the Cutter Steady: Any jerks or sudden movements can cause an uneven cut. Use both hands to hold the plasma cutter and keep it as steady as possible.
  • Check the Consumables: Regularly check the cutter tip and other consumables. Worn - out parts can affect the quality of the cut.

Troubleshooting

  • Uneven Cut: If the cut is uneven, it could be due to an inconsistent cutting speed or a problem with the circle cutting guide. Make sure the guide is properly attached and adjust the cutting speed as needed.
  • Arc Not Starting: Check the gas supply, the power connection, and the cutter tip. A clogged tip or a low gas pressure can prevent the arc from starting.

Why Choose Our Non Touch Pilot Arc Plasma Cutters

Our plasma cutters are designed with the latest technology to ensure high - quality cuts. They are easy to use, reliable, and come with excellent customer support. Whether you're a professional welder or a DIY enthusiast, our plasma cutters can meet your needs.

If you're interested in purchasing a Non Touch Pilot Arc Plasma Cutter or have any questions about circle cutting or our products, don't hesitate to reach out. We're here to help you make the right choice for your cutting needs.

References

  • "Plasma Cutting Handbook" by Industry Experts
  • Manufacturer's Manuals for Non Touch Pilot Arc Plasma Cutters
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