The short answer: CNC machining uses computer-controlled cutting tools to produce precision components to tight tolerances. Learn what CNC machining means, how it works, and where it is used
CNC Machining is a vital element to the core processes of manufacturing. The term CNC means "Computer Numerical Control" — the automated control of machining tools.
Developed in the 1940s, NC machines used punched tape technology. Today, CNC machines are used across automotive, aerospace, construction, agriculture, industrial, and defence sectors.
CNC Machining is a fabrication method using a motor-driven machine controlled by a computer. The subtractive process removes material from a workpiece to produce a custom-designed part. Instructions come from CAD or CAM software via G-Code or M-Code.
Our CNC Machining department consists of skilled, experienced machinists providing CNC Turning and CNC Milling services. We also offer a CMM Inspection Service.
For more information, email info@varlowe.co.uk or call us on 01902 861042.
CNC stands for Computer Numerical Control. It refers to the automated control of machining tools — including mills, lathes, drills, and grinders — using pre-programmed computer software. The program dictates the movement, speed, and depth of the cutting tool to produce components to a defined geometry.
CNC machining is used to produce precision components across virtually every industrial sector: aerospace (turbine components, brackets), automotive (engine parts, gearbox components), oil and gas (valve bodies, flanges), food and pharmaceutical (stainless steel housings), and general engineering (shafts, bespoke fittings, repair parts).
CNC milling uses a rotating cutting tool to remove material from a stationary workpiece, producing flat surfaces, slots, pockets, and complex 3D profiles. CNC turning rotates the workpiece against a stationary cutting tool, producing cylindrical shapes such as shafts, bushings, and threaded components. Many components require both operations.
Standard CNC machining tolerances are typically ±0.1 mm, with precision machining achieving ±0.01 mm or tighter for critical features. Achievable tolerances depend on the machine specification, material, component geometry, and tooling. For the tightest tolerances, CMM inspection is used to verify conformance.
Yes. Varlowe Industrial Services provides CNC milling, CNC turning, and CMM inspection from their Wolverhampton facility. They machine components for industrial clients in small-to-medium batch quantities, and also produce bespoke one-off components for maintenance, repair, and obsolescence replacement applications.