QG-100D is an economical and low-speed precision cutting machine, which is particularly suitable for cutting small, soft, brittle, and special-shaped metal materials, composite materials, plastics, electronic components, biomaterials, ceramics, cement, rock and minerals, etc. It is also commonly used for thin-section sample preparation. The machine uses a weight block load gravity feed straight cutting, and stops automatically after cutting. The micrometer device can adjust the thickness of the sample cutting to achieve precision cutting. The touch screen control is clear and user-friendly, and the cutting wheel speed is controllable. In order to avoid burning the sample due to overheating during cutting, the machine has a built-in movable coolant tank. During the cutting process, the diamond cutting blade rotates to bring out cooling water, so that the cutting blade and the sample material are cooled. The surface of the cut sample is bright and flat without burns. The equipment has the characteristics of exquisite body, small space occupation, easy operation and maintenance. It is one of the sample preparation equipment used for metallographic experiments in colleges and universities, factories and enterprises.