Can small ultrasonic cutter cut stone？

No, there is a lot of friction resistance when cutting.

The ultrasonic cutting machine uses the energy of the ultrasonic wave to heat and melt the local part of the material to be cut, so as to achieve the purpose of cutting the material. The cutting blade vibrates with ultrasonic wave, and the friction resistance is particularly small, so the material to be cut is not easy to stick to the blade. It has obvious cutting effect on frozen, viscous and elastic materials. It is especially effective for cutting food, rubber or objects inconvenient to be pressed.