Close dimensional tolerances on castings can be achieved of + or - 0.005 inches per inch (metric equivalent 0.125mm per 25mm).

This level of accuracy is usually sufficient to eliminate the need for further machining on many components, as the process gives an excellent finish on dimensions and surface texture.

In addition the majority of alloys can be investment cast, including many that prove problematic to machine.

Above Picture: Close up showing the rotor profile.