[Hal Copple]

i have learned, slowly and with some blood, how to make AN lines. There is no substitute for your own gradual experience.

It is just one of those things that has little tricks that you have to learn on your own. I have lots of Teflon AN, SS AN, and just put on some Aeroquip Socketless fuel lines, and had to make some practice cuts and fittings for each one, which some consumption of the hose ends.

I think it works best to go ahead and get the aluminum vise blocks to hold the fittings, and some good AN wrenches. I have now three or four sets, they do different things at different angles. I use a new 32 tooth hacksaw blade for each cut, plenty of lubricant, take my time, mark the hoses appropriately, (they can push them selves out when tightened), and generally, end up with something that is sturdy, and leak proof.

I did have one problem with slow leak on a complicated AN 12 multifitting a few years ago, i just made the fitting less complicated, and it was resolved.

I think the most important thing is thoroughly flush each finished hose out afterward, i use hot soapy water, then pour a tiny bit of gas (safely!!) thru it, to get out the tiny remnants of the cut off stuff.

I have used Aeroquip, Earls, and some other stuff, and not found any necessarily easier than the rest.

By the way, they are advertised as resuable, but in my experience, the threads last about two assemblies at most.

Practice makes pefect!!