Patent ID: 7103956

Claim:
A method of fabricating a cavitation chamber comprising the steps: a) mounting a piece of stock material in a first lathe chuck; b) finishing a first mating surface of a first half sphere; c) turning an internal spherical surface corresponding to an inside surface of said first half sphere; d) turning a first portion of an external surface of said first half sphere; e) dismounting said piece of stock material and reversing a mounting position of said piece of stock material relative to a first lathe chuck position; f) mounting said piece of stock material in a second lathe chuck; g) turning a second portion of said external surface of said first half sphere; h) repeating steps a) through g) with a second piece of stock material to form a second half sphere, said second half sphere having a second mating surface, both said first and second half spheres having a first inner diameter and a first outer diameter; i) locating a ring-shaped sheet of brazing material between said first and second mating surfaces, said ring-shaped sheet having a second inner diameter approximately equivalent to said first inner diameter, and said ring-shaped sheet having a second outer diameter approximately equivalent to said first outer diameter; and j) brazing said first and second mating surfaces together.