[clarification needed] A competent machinist should have a well-developed mechanical aptitude, the ability to correctly use precision measuring instruments and to interpret blueprints, and a working knowledge of the proper parameters required for successfully utilizing the various tools commonly used in machining operations.

CNC (computer numerical control) is the modern manufacturing method in which machinist use a form of programming called G-code to make components for a wide variety of industries.

The machine trade is an extremely broad field with a wide variety of workplaces, job duties, and types of work.

Most machinists work in machine shops and factories where they operate machinery that produce precision component parts.

In general, the occupation is exacting, and requires extensive knowledge of the tools and processes in order to achieve the tight tolerances and surface finishes that these parts specify.

A machinist may work on manufacturing something relatively simple like a bracket, or a shaft, or something extraordinarily complex, such as aerospace components accurate to 5 micrometres.

A fitter and turner is the tradesperson who fits, assembles, grinds and shapes metal parts and subassemblies to fabricate production machines and other equipment.

[2] CNC machines are becoming the standard due to their speed, precision, flexibility, repeatability, and reduced downtime while changing jobs.

[2] Large commercial organizations often staff machinists on site in a maintenance mode to ensure continuing operations of the production machinery.

Additive machining means 3D printing to create industrial components, prototypes, tooling, and end-use production parts.

There are several processes in additive manufacturing which include direct metal deposition: electron beam melting, fused filament fabrication, select laser sintering, and variations of them.