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Single crystals with any type of crystal structure can be set up in any desired orientation by a simple and time-saving method of comparing the Laue pattern of the single crystal with a computed and plotted Laue pattern. For this orientation procedure a special goniometer polishing jig has been developed. As examples, both the determination of an unknown direction and the preparation of a specified crystal plane of a hexagonal structure are demonstrated.

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The description and use of a precision goniometer polishing jig are presented. Specimens pre-oriented within 6° can be exactly oriented and prepared on the jig. Samples of single crystals of refractory metals have been prepared with a surface polished within 1/20 of a wavelength of sodium light and with an orientation to within 15′ of the desired plane. This jig can operate on any horizontal running polishing machine.