These tools are used with CNC (Computer Numerical Control) machines to precisely cut, shape, engrave, and finish jewellery pieces from various materials like precious metals. Common types include:

 * Ball Nose Cutters: Create curved surfaces and intricate 3D details.

* Face Mills: Flatten and finish surfaces.

 * Slot Drills: Create slots or channels, useful for stone setting or decorative elements.

 * Engraving Tools: Specialized for creating fine lines and designs. These come in various shapes (V-shaped, pointed, ball) and sizes (down to 0.5mm).

 * Diamond Cutting Tools: For creating facets and decorative cuts on bangles and rings. These can be V-shaped, concave, or convex.

 * Background Tools: Create textured or matte finishes on jewellery surfaces, sometimes with lining or wave effects.

 * Special Design Tools: Custom-shaped tools for unique decorative effects.