I realize that this is an older thread; it came up in a search while researching making new brake for my 41. I found the discussion to be highly informative, and was a big part in my decision to go with the NiCopp tubing.
This is the first time I've made brake lines. The NiCopp is a pleasure to work with and very easy to flare. It is also very easy to bend, and work with.
I did find that a good flaring tool makes a huge difference. The first one I purchased was a
Cal-Van OTC 6502 Master Brake Flaring Tool Kit, and every flare was lopsided. I returned it. The one I wound up purchasing is a
Ridgid 345. With this tool I was able to make really nice flares right off the bat.
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