I've had great success with my Rigid brake flaring tool. It clamps the line tight, and has worked perfect every time. I also ended up buying their 37 degree flaring tool for AN lines. Works much better than the cheap designs, and isn't that expensive. I probably flared 20+ leak free joints with this tool, plus a few that the fitting wasn't on.
https://www.amazon.com/Ridgid-23337...-5&keywords=rigid+brake+flaring+tool

Last edited by 4100 Fire Truck; 05/12/2018 12:13 AM.