Hard Lines 101

[MagmaJct]

Originally Posted by GRX

TIG rod. Good idea. I have always used coat hanger wire though. A lot cheaper. One short piece of flexible hose between frame & block is all that's required. My preference is to use much hard ine as possible to avoid potential problems. And I can't stress enough how easy the nickel-copper line is to work with. You can bent it into a pretzel by hand if needed.

Also ... laying a piece of string along the bent line is a good way of measuring the total length needed.

My understanding is that copper will work harden over time and crack. Does the nickel help this?