[zfaylor]

We have used them in place of a corner rounding end mill on aluminum at home in the garage to get a nice radius on a random part by hand on the bridgeport. Never would you be able to achieve what is needed on turbochargers with one. The contour on the compressor is not a consistent constant radius. Spend some time learning the basics of machining power wagon. Turbochargers are not the thing to learn on.