Eastwood Flaring Tool Issue with Cupro-Nickel

Weird. I would suspect the material as well, especially if you’ve flared with those die’s before without this issue.

I’ve used my Eastwood flaring tool to do everything from 3/16” to 3/8” in both stainless and regular steel line. I get the tubing from Summit.

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.