[Brake Lines] Kunifer flanging splitting

[Efbe]

am trying to replace the brake lines on my car at the moment.

Have a decent draper flanging tool for the brake unions, which works really well on copper, but when I try on Kunifer the end of the flange just splits.

Any idea on how to deal with this?

[stevieturbo]

Either you're doing it wrong, or you need a better tool.

Post a picture of what's happening

[imagineifyeswill]

Are you making Stage 1 flares i.e domed flares, or Stage 2 i.e countersunk flare. If making stage 2 then you need to make a stage 1 first then convert to stage 2, if you just try to go straight to a stage 2 it will just split the pipe.

[Efbe]

here we go, am using one of these...


and getting this...

[tr7v8]

Looks like you're being much too heavy handed with the flare. Too much pipe sticking out

[PhillipM]

You need to make the bubble flare first then use the female die to invert it, it looks like you've done just a single thickness there unless it's just the photo?
If that's the case of course, then your old copper flares need scrapping too.

[ShiningWit]

The instructions you get with them are very specific....

[Efbe]

the tool is borrowed from a friend, so no instructions.

So I need to use the other end first. cool thanks. Will go and try that tonight

[ShiningWit]

Efbe said:

the tool is borrowed from a friend, so no instructions.

That there is your problem and should have been mentioned in the first post. If he doesn't have them then search online, without them (as proven) you will have no idea.

[Efbe]

sorted. that looks better!

[tr7v8]

That looks better!