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采用圆弧刃金刚石车刀对铝和单晶锗进行超精密车削实验，对切屑在扫描电子显微镜下进行观察。当切削厚度达到纳米级时，得到了和常规切削同样的由剪切滑移的层状薄片堆积形成的连续带状切屑。但是切屑的变形系数远远大于常规切削下的切屑变形系数，一般可达２０以上。对实验结果的分析说明对单晶锗实现了最小切削厚度为２０ｎｍ的稳定切削。
The use of arc-edge diamond turning tools for ultra-precision turning of aluminum and single-crystal germanium, the chip was observed under a scanning electron microscope. When the cutting thickness reaches the nanometer level, a continuous band-like chip formed by the accumulation of shear-slip laminar sheets is obtained in the same manner as the conventional cutting. However, the deformation coefficient of the chip is much larger than the chip deformation factor under conventional cutting, generally up to 20 or more. The analysis of the experimental results shows that a stable cutting with the minimum thickness of 20nm can be achieved for single crystal germanium.