Sandpaper scrub procedure is a procedure that can be prepared in the khan test pieces due to conflicts with the sandpaper is a polished plane is called a coarse polishing or adjusting the plane and smooth skin is called an interrupt. Polishing with sandpaper often contradict with coarse sand paper from extension to extension, until the resolution 240, 320, 400, 600, 800, 1000 and 1200, according to La level.
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