The traditional process of using a specialized tool to stretch and flatten the end of a soft metal pipe outward, creating a wide, thin flange. This technique was historically used in lead plumbing to create a mating surface for a joint, allowing a union nut to pull the flared end tight against another fitting.
Heard on the job
You'll have to taft the end of that copper tube carefully so it sits flush against the brass union without tearing.
Also heard as
- taft joint