help flaring nickel-copper lines

I,m with mguner, in post #6. I think you are letting the tube stick out to far in the clamp tool. The double flare insert, is the gage for extrusion lenght, on the clamp. You want the tube to stick out the same width as the insert. The inserts are the little round things you put in the end of the exposed tube, to make double flares.

barracudadave67