Can cnc machine cut metal?

Yes, CNC machines can absolutely cut metal. Here's a quick overview:

Metals commonly cut by CNC:

• Aluminum – very easy to machine, widely used

• Steel & stainless steel – common in industrial parts

• Brass & copper – good machinability

• Titanium – machinable but requires care

• Cast iron – frequently machined for engine components

Types of CNC machines used for metal cutting:

• CNC milling machines – use rotating cutting tools to remove material; great for complex shapes

• CNC lathes – spin the workpiece against a cutting tool; ideal for cylindrical parts

• CNC plasma cutters – use a plasma torch to cut sheet metal quickly

• CNC laser cutters – precise cuts on thin to medium metal sheets

• CNC waterjet cutters – cut with high-pressure water + abrasive; no heat distortion

• CNC EDM (Electrical Discharge Machining) – uses electrical sparks; great for hardened metals

Key considerations:

• The right cutting tools (carbide, high-speed steel, coated tools) are essential depending on the metal

• Coolant/lubrication is often needed to manage heat and extend tool life

• Harder metals require slower speeds and more robust machines

• Tolerances as tight as ±0.001" are achievable

In short, CNC machining is one of the most common ways to manufacture precise metal parts across aerospace, automotive, medical, and countless other industries.