Ok, You may think I’m nuts for this one, but I’m going to save you some headaches, late nights and fists full of your own hair from trying to find leaks from poorly flared brake lines.
If you ever plan on building more than one car in your life. Or, you do repair work on cars, this is a must have tool. Once you use it, you will through your old flaring tools right in the garbage.
I know, this thing isn’t exactly cheap. My hand shook as I took the credit card out of my wallet to get it. But, after I used it once, I gave all my old flaring equipment away to friends as a practical joke.
When you use the right procedure, and I will give you it, you will create perfect inverted flares every time.
It has dies to do all common line sizes for standard and metric.
Here is the procedure I use.
These cutters often leave the ends a little cone shaped.
The end needs to be perfectly square for any flare to be good.
Then I use a small file to knock the burs off the outside of the sanded tube.
Then I use a lathe and mill center 3/16” counter sink bit (http://amzn.to/1Pr0Ikk) to de-bur the inside of the line.
This will also put a small chamfer on the inside of the line. I just twist these into the line with my fingers.
No power really necessary.
Next choose the correct dies for the job. The 3/16” line dies will be double sided, so be sure you choose the correct side for double flare.
Put the line in the die even with the end.
Choose function “A” and pull the lever. Rotate the head to function “B” and pull the lever.
Clumps of hair and sanity still intact.