How to Use Flaring Tool for Your Automobile?

The efficiency of a brake flaring tool is never in question. As a car or any automotive owner, you should be able to get a suitable flaring tool with easy handling ability. And also, because in the long run, this tool will prove to become one of your worthy investments. It’s a must-have to make a huge difference in your car.

You can use the flaring tool for both personal and professional uses. A pro guy will probably have a good idea over how to use flaring tool. However, you might be one of those who need it for personal use. And if that’s the case, this guide is going to help you a lot.

How to Use Flaring Tool for Double & Bubble Flaring.

I hope you refer to an expert or lots of research for choosing the right flaring tool. Once you sort out with that, it’s only left to use the tool. The needs could be several… From fitting transmission lines, cooling fuel to dealing with brakes, you’ll need these for a lot of purposes.

Start with Some Preparation…

So, you need to deal with a few pre-planning before actually using the flaring tool. Start by breaking pipe unions. You should also squirt the nipples. Try to do these one day before the actual flaring chore. Manage some brake fluid as well. You should also make ready each and every tool as well as nut spanners. Decide earlier whether you’ll be using any metric or imperial tools.

To not let leakage ruin anything, you need to eliminate the road wheel. Also, clap any loose pipes. The bleed nipple should have some movement. If there’s no movement going on or it has damage, go for replacement.

Old rusted brake pipes need snapping off. Also, remove nuts using the ring spanner. Change the nuts. However, keep those old brake pipes. You’ll require them to cut new replacement at the right length.

Using the Flaring Tool…

Using the Flaring Tool

Get the tubing and cut it at the desired length. You’ll need a tubing cutter for this. In the cut ends, there should be no burrs at all. Also, right on tube’s hex end, you need to slide the tubing nut.

Figure out correct opening of the tubing clamp. Loosen wing nuts and place the tube here. Now on a protruding tube, simply place the correct adapter size. It needs to be upside down from the tube’s end. The thickness of adapter’s huge part should be matching. Tightly fix the nuts on wings. While tightening nuts, you need to leap the tools halves parallel with each other.

Using some brake fluid, you’ll be next coating the adapter. Finally, insert it inside the tube. Place on the flaring on tubing camp. You need to ensure the tubing clamp is having a flaring toll screwed point lock on center. Rotate the screw in a clockwise motion. You should do so until the adapter is bottoming out of tubing clamp. Using a vice, you’ll be able to tighten finally quite easily.

Now the screw should be loosened to remove the adapter. At this point, the tubing end should resemble a bubble look. Now position the brake line flaring tool in such a way that it crosses through tubing end. Make sure it is centered as well. The clockwise turning of screws is next so that every cone is completely bottomed out.

Get rid of the brake line flaring tool now. Check all end of the tubing. There should be no cracks or gaps with the flare and it must be evenly rounded. Detach the tube from clamp.

Once the final assembly is done, do a finishing check-up for finding any leakage. You can use some scrap pieces of brake pipe for experiments.

You are going to need a tubing cutter and brake fluid apart from the flaring tool itself. Remember to always have a look for new flare cracks. A crack end flare should be never used. The good quality of flare will eventually make an impact on how well fitting connects brake.

Bubble Flare Brake Line…

To learn about how to use a bubble flare tool, you’ll need to understand about the kit. I’m referring to a quality bubble flare kit. These contain adapters with yoke and a flaring bar. There’s also pipe cutter included usually. You can try single and double flare as well with these kits. The steps are pretty simple.

  1. Cut tubing using the pipe cutter with right settled size.
  2. Insert the fittings properly into flaring bar.
  3. The tube should not move so tightly set flaring bar to prevent movements.
  4. Using flaring yoke, tighten the flaring button. But avoid overtightening. Once you realize the tight is right, don’t squeeze e anymore.
  5. And after removing the flaring yoke while taking button out, you’ll discover a bubble flare.

Double Flared Brake Lines…

To perform the most popular double flare method, learning is important. You need to understand how to use double flare tool. The line end will be formed twice in this case. This is when single flare over lip folding takes place. It’s similar to a single flare in most ways. However, the double one is stronger and acceptable for high-pressure systems.

Notes on Pressure & Seal

To discuss further how to use flaring tool for brake lines, the right use of pressure and flare fittings seal will come next. The metal brake lines are capable of tolerating almost five thousand PSI test. One a 15000 PSI, most brake lines will burst down.

Also, talking about seals, you should use some oil in this case. Using oil on threads can reduce friction when sealing. Threads are not capable of sealing. They just help in tightening nuts well. The oil will also help together with thread to make nut turning easier. So that sealing with flare can be as easy as possible.


And we are done with how to use flaring tool. This is not for sure a tedious process. Once you put enough thoughts to buy the right flaring tools that match both needs and preferences, things will be automatically easier.

To achieve a good fitting, you must learn such tutorials and rely less on help. However, if you feel the process is too complicated for you, go for hiring someone. It’s better than ruing the entire system. Good Luck!

About Jeremy

Hello! My name is Jeremy Bloomberg. I have been passionate about carpentry and DIY. Over the years, my passion slowly turned into expertise and wider knowledge about electronics. I’ve been involved in numerous projects, both professional and personal. I want to share all I have learned with you. Welcome!

Follow me: Facebook, Twitter