That makes sense and is a key reason for the question. For a few more dollars the line becomes more permanent. Thanks all for your replies.

I think that over time your flex line will fail. Even with the steel braided outside, the inside will still deteriorate. The only place you should use flexible lines is where movement takes place and solid lines wouldn't work.

Regarding the brake switch, I got tired of the hydraulic style failing. So, I went to the "Classic Mini Late Model Brake Light Switch" Part No: 13H3735, instead of the "Classic Mini Brake Light Switch Late Blade Type" Part No: C16062. Both are available here on our host's site. The Late Model Brake Light Switch has been more dependable in my experience than the hydraulic type Blade type Light switch. And regarding the braided hose, I like the concept because in theory it will not deteriorate as quickly as the rubber style where flexibility is needed. I don't know if it is really any better.

I would never use copper line either, steel line is not that hard to work with, and the newer copper nickel line is just as easy to work with as copper.

where's your brake light switch? 

I think I'd use it on the clutch slave, but I hate braided brake lines.

Looks like it works in your custom application = Motorwithit

I have a extra braided flex brake hose (short). I am wondering if there is any reason not to use it instead of a copper pipe to join from a Tee to the braided brake hose that mounts in the subframe, above the front brake, and goes to the front brake.