Double Flange tool

[JointTech]

I got a double flange set from Amazon. It was such a POS it broke before I could get one flange done. You had to crank the flange holder so tight it would deform the pipe enough you couldnt get the little adapter back out. But then I snapped off one of the wingnuts that clamps it. So that junk is going back to Amazon.

Then I went to pep boys and got whatever they had in the tool section. It uses a half inch socket for the clamp and the plunger instead of the dumb wing nuts.

Still you have to crank it down so hard it mashes up the pipe and the flange it creates isnt impressive.

So does anybody know of a good double flange tool? Or am I just doing it wrong? mine arent nearly as clean as the one on the stuff you buy.

Im working with some 3/8 fuel line.