Eastwood Flaring Tool Issue with Cupro-Nickel

72bluNblu said
The only “trick” I’ve used, especially with the larger lines, is to put a little anti-seize on the tubing. It makes for cleaner, more uniform flares with the larger tubing and harder materials.

I've tried brake fluid, wheel bearing grease, anti-seize, and spit for lubrication and nothing changes. I'm suspecting the material hardness too. I did some 5/16" cupro fuel lines and made it work and I did a 3/16" steel brake line on my BMW before I sold it, so I think the dies are OK. They look like they are sintered or molded so they are probably all the same from part to part.

jos51700 said
It's too soft for those tools, I've had similar issues. I ended up using compression fittings when I tried to use it.

Good to know I'm not going crazy. Thanks for feedback. I'll see if I can make it work and if not I'll either buy the OEM lines or use steel. This is on my son's truck so the parts are available but a lot more expensive than making them from bulk stock.