Fig. (14) SEM images collected at three different magnifications for the turned surfaces with and without HF treatment (TS and TS+HF) together with filtered MeX^® images after application of filter with sizes 20%, 10%, and 5% of the horizontal image width. Differences between the two surfaces become more visible with increased magnification. The MeX^® filtered images show quite clearly that the turning tracks are erased more and more by the application of smaller filter sizes.