What kinds of carving knives do you need for primary olive stone carving?

There are three main types: flat mouth, round mouth and oblique mouth, and the size of the cutting edge is generally between1mm-4 mm. After all, the olive core itself is so big, and there are commonly used flat knives and round knives. The oblique knife is used to deal with some details. Generally, the flat knife is used as the basis of the picture, the circular knife is used to make arcs, and the oblique knife is used to dig lines or corners.