Thanks Arthur,

I tried a flare tool once and had a miserable failure. It was one of the cheap tools you can get at an auto parts store. The wing nuts clap the two bars on the tube, coud't get a decent flare and I tried a bunch, and the clamps chewed up the line if tightend enough to hold the line. I have seen better ones that are about $300 but while I do invest in tools, 300 for a flaring tool is a bit much. That time I brought the line to a local shop and they put the flare on for me.

Now maybe sometime I will look into making my own (I do have a lathe and a mill).