help flaring nickel-copper lines

Looks like you're doing fine, you just need to adjust the technique. As above, be sure to
de-burr the ID after you've cut the tubing.Also as above per OMM, you are way over-doing
the second step, which ain't hard to do w/ that ni-cop stuff. It is very convenient to route
thru a labyrinth and bend, but it's like working w/ bubble gum. Try shortening the amount of
tubing so that it is not up to the gauge, I have found that to help w/ soft tubing, then do the
1st step and see how far it "rolls" towards the ID of the tubing. It should not be at or smaller
than the tubing ID, and it definitely should not "pinch" the stem on the forming die. Then put
just enuff taper to see a seat ring, believe me, that crap will form itself like a glove to what-
ever fitting or hose end you're mating it to.
Just an FYI, that stuff turns green and ugly after not too long, so if appearance means a
lot to you, use something else or never-dull/coat the stuff.
:coffee2: