I have never used the slide on springs for bending. Has anyone here? Work as well as benders? How are they on copper versus steel? In many instances I could have slid one on rather than fit a bender in a tight spot. But you could not do so with a pre flaired end I realize.

I only ask about copper for heat pump lines. Had to put this in as copper lines are illegal as brake lines I believe. Probably not because of the pressure but perhaps termination weakness or tendency to break with vibration.