TIME-2DE is a frequency conversion double-disk grinding and polishing machine with stepless speed regulation. It allows two operators work at the same time. The body is integrally formed with ABS material, with a novel and beautiful appearance, anti-corrosion, and durable; the solid and large supporting chassis ensures precise rotation balance. This machine is suitable for pre-grinding, grinding and polishing metallographic samples. The left disc is used for pre-grinding, and the right disc used for polishing. The machine can not only perform light grinding, coarse grinding, semi-fine grinding, and fine grinding, but also precision polishing. It is an indispensable machine for users to prepare metallographic samples.