A CNC (Computer Numerical Control) 3-axis mill for metal is a specialized machine that uses computer-aided design (CAD) software to precisely control the movement of a cutting tool along three axes (X, Y, and Z) in order to remove material from a metal workpiece. The machine can be programmed to create intricate shapes and contours with high precision and accuracy, allowing for the creation of complex parts and components.

A CNC (Computer Numerical Control) lathe is a type of computer-controlled machining tool that uses rotating tools to cut and shape materials such as metal, plastic, and wood. The lathe's cutting tools move along two axes (X and Z), allowing for precision cuts to be made in a variety of shapes and sizes.

A 4-axis CNC router for wood is a computer-controlled cutting machine that uses four axes of motion (X, Y, Z, and A) to carve, shape, and mill wood into precise shapes and designs. This type of CNC router allows for greater flexibility and precision in the manufacturing process, as the A-axis enables the router to rotate the wood to different angles and positions, allowing for more complex cuts and shapes.