Quote Originally Posted by IC2
This $585 thin wall tubing tool you show a link is for copper and aluminum only according to the information. You cannot safely use either metal for tubing brake lines on an automobile. Try to double flare with SS and you will split it around the circumference of the bend fold. Why would you even want to consider double flares in AN fittings that are designed for and only require a single flare?
If you read my first post you would see I never suggested a double flare for an AN fitting. I stated "It can be double flared but it is not necessary or advisable"
The tool I linked to was only to show it is possible and there is a spec for a double flared AN nothing more.