Surfaces lapped with loose grains are matte gray in color (Figures 8 + 9). This layer can be easily removed with a few passes on the polishing table (Figure 62). This process is used for achieving a clean and reflective lapped surface on lapped workpieces. A flat-lapped plate is used as a polishing table. It is covered with fine polishing paper and tensioned via an eccentric. There is virtually no detectable loss of flatness after this polishing process. The paper surface should be washed regularly in order to remove the abraded material. Polishing paper is supplied in 10-m lengths.
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