How To Use A Flaring Tool

How to Use a Flaring Tool

If you’re working on a plumbing or automotive project, you may need to use a flaring tool. This tool is used to create a flared end on a tube, which allows it to be connected to other components. In this article, we’ll go over the steps involved in using a flaring tool to ensure that you can complete your project with ease.

Step 1: Gather Your Materials

Before you begin, make sure you have all of the necessary materials on hand. This includes the flaring tool, the tube that you’ll be working on, and any connectors or fittings that you’ll be using to connect the tube to other components.

Step 2: Prepare the Tube

Before you can use the flaring tool, you’ll need to prepare the tube that you’ll be working on. Use a tubing cutter to cut the tube to the desired length, and then use a deburring tool to remove any rough edges or burrs from the cut end.

Step 3: Insert the Tube into the Flaring Tool

Next, insert the prepared end of the tube into the flaring tool. Make sure that the end of the tube is flush with the end of the flaring tool, and that the tube is centered in the tool.

Step 4: Tighten the Flaring Tool

Once the tube is in place, tighten the flaring tool to hold the tube securely in place. Make sure that the tool is tightened enough to hold the tube in place, but not so tight that it damages the tube.

Step 5: Create the Flare

With the tube securely in place, use the flaring tool to create the flare. Start by turning the flaring tool handle clockwise to gradually expand the end of the tube. Continue turning the handle until the flare is the desired size.

Step 6: Inspect the Flare

Once you’ve created the flare, inspect it to ensure that it is the correct size and shape. The flare should be smooth and even, with no cracks or defects. If you notice any issues with the flare, you may need to start over and create a new one.

Step 7: Connect the Tube

Finally, connect the tube to the other components using the connectors or fittings that you’ve gathered. Make sure that the flare is seated securely in the connector or fitting, and that there are no leaks in the connection.


What size tube can I use with a flaring tool?

Most flaring tools are designed to work with tubes that are between 1/8 inch and 3/4 inch in diameter. However, you should always check the manufacturer’s specifications to ensure that your tube is compatible with the tool.

Can I use a flaring tool on stainless steel tubing?

Yes, many flaring tools are designed to work with stainless steel tubing. However, you may need to use a different type of flare to ensure that the connection is secure.

What is the difference between a single flare and a double flare?

A single flare creates a flared end on the tube that is angled outward. A double flare, on the other hand, creates a flared end that is angled outward and then bent back in on itself. Double flares are generally considered to be more secure and leak-resistant than single flares.


Using a flaring tool is a simple process that can be completed in just a few steps. By following the steps outlined in this article, you can create a secure and leak-resistant connection for your plumbing or automotive project.