Camber adjust axle on car

[Bob Johnson]

Is it possible to adjust the camber with the axle still on the car. If I were to put a heavy I-Beam under the axle. Then put a jack at the wheel end of the axle, a brace at the center of the axle to prevent the center from moving down, and a brace just center of the perch that would prevent the axle form moving upward. Then the jack would bend the axle up to achieve more negative camber> below is a drawing of what I am suggesting. What do you think? good or bad idea. I would like to avoid removing the axle if possible. BTW I have too much positive camber.

Bob