Ok here is the second tool I promised. Didn’t have pics last night.
It relates to loosening old rusty brake line nuts. How many of you have been forced into vise grips on a brake or clutch line nut because your fancy flare nut wrench spreads and slips around a really old and tight one? Come on, fess up, we all do it. You get it loose, sure, maybe with some heat, but the hex of the nut is invariably wrecked. When you go to put the line back on, now you HAVE to use vise grips to tighten it, and the hex soon becomes a circle……
I have tried MANY brands of flare nut wrenches, all are simply not good enough. So, I made my own! With a special feature.
Here is the standard heavy walled flare nut wrench.
My idea was to add some way of squeezing that wrench hex closed to tightly grip the hex of the line nut, so it CAN’t slip around. First approach was to dream of fancy levers and threaded things to apply the needed force to close down on that heavy open “C” and squeeze the nut, but even with my largest vise grips, I really couldn’t apply enough force to collapse the opening. Ok, so maybe grind down the wall thickness until its thin enough to give? Maybe, but why not find a thinner walled wrench to start with? Well there is no such thing. Unless….
So I just bought a cheap Amazon 10 mm 6point box end wrench and turned it into a flare nut wrench by using a thin cutoff wheel and making a 3/16 gap in the end! My creation on the left, standard flare nut wrench on the right.
Now its easy to squeeze that gap with a 8” vise grip
So you just place the wrench on the line nut, then close the vise grips over the “C” and squeeze it shut. Then apply all the force you want with a hammer or pipe or whatever it takes to break the nut loose without fear of stripping the hex.
After extensive testing on several cars recently, this little jewel is working perfectiy! The only thing I need to do is make the handle longer so I can tug on it by hand without beating on it with a hammer all the time, especially when the room around nut is tight.