Double flaring a brake line is a process of creating a flared end on a brake line, which allows it to be connected to a brake caliper or other component. It is a critical skill for anyone who works on brakes, as a properly flared brake line will help to ensure a leak-free and safe brake system.
There are a few different ways to double flare a brake line, but the most common method is to use a flaring tool. A flaring tool is a hand-held device that clamps onto the brake line and uses a die to form the flare. To double flare a brake line, the line is first cut to the desired length. The end of the line is then inserted into the flaring tool and the die is tightened. The tool is then rotated around the brake line, which forms the flare.