Use a C clamp on the flaring blocks to be sure you get a good grip on the tubing. I've had to do that when double flaring 3/8" and 1/2" steel tubing at times.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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