Supplier's Category: All CNC Machining: Precision milling, turning, and multi-axis machining
CNC machining removes material from a solid block using computer-controlled mills, lathes, and multi-axis machines to produce precise metal or plastic parts directly from a CAD file. It needs no dedicated tooling, making it the default choice for prototypes and low-to-mid volume production.
CNC machining is the default for prototypes and low volumes because it requires no tooling — cost per part stays roughly constant whether you order one unit or a hundred, unlike molded or cast processes.
- Prototyping: single units or small batches to validate a design
- Low-to-mid volume production: parts where tooling cost for molding/casting isn’t justified
- Precision parts regardless of volume: features too tight-tolerance for casting or molding alone
Related terms: 3-axis and 5-axis milling, CNC turning, Swiss machining, multi-axis machining, tolerancing and GD&T, material certification, surface finish (Ra) specification, tool path programming, fixturing, first-article inspection
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What separates a strong machine shop
Machine count matters less than measurement and process control.
Questions worth asking
- What metrology equipment (CMM, optical comparator) do they use to verify tight-tolerance features
- Can they hold your specific tolerance class on your specific material — tolerances that are easy in aluminum can be hard in titanium
- What’s their typical lead time at your order quantity, not just their advertised minimum