Abstract
By the use of only one piece of equipment, exceptionally flat, polished thin sections and plugs having few defects may be produced from a variety of geologic materials. A horizontal lap unit, with exchangeable lap wheels and an automatic polisher, is used for all steps from grinding to final polish. Diamond abrasive compounds are used exclusively. The compounds are embedded in a chemotextile material, producing fixed grain laps that remove material by planing action until scratches are no longer visible with light optic microscopes. After each step, sections are cleaned with an ultrasonic cleaner. Meticulous lab technique is important.
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