Why Combine Die Casting with CNC Machining?

Die casting is a highly efficient process for producing complex metal parts in large volumes. Molten aluminum or zinc is injected into a steel die under high pressure, producing near-net-shape components with excellent dimensional consistency and smooth surface finish.

However, even the best die-cast parts have limitations. Features such as precision bores, threaded holes, sealing surfaces, and tight-tolerance interfaces cannot always be achieved directly from the casting process. This is where CNC machining adds critical value.

By combining die casting with precision CNC machining, manufacturers achieve:

• Tighter tolerances – Critical features can be held to ±0.01 mm or better

• Complex geometries – Holes, threads, grooves, and undercuts that are impossible to cast directly

• Superior surface finish – Machined surfaces for sealing and mating applications

• Design flexibility – Post-cast modifications without retooling the die

The Integration Advantage

Managing separate suppliers for casting and machining creates coordination delays, quality risks, and logistics costs. An integrated die casting and CNC machining service eliminates these challenges.

• Single point of responsibility – One PO, one quality standard, one delivery date

• Shorter lead times – Castings move directly from casting to machining, with no external transport delays

• Better quality control – Dimensional verification begins immediately after casting

• Reduced logistics costs – One shipment, one supplier, one invoice

Typical Applications

• Automotive & EV: Motor housings, battery enclosures, structural brackets

• Industrial Equipment: Gearbox housings, valve bodies, motor casings

• Electronics: LED housings, heat sinks, enclosures with threaded inserts

• Medical Devices: Diagnostic equipment housings, surgical instrument components

Our Integrated Capabilities

Die Casting

• Aluminum alloys: ADC12, A380, A356

• Zinc alloys: Zamak 3, Zamak 5

Precision CNC Machining

• 3-axis, 4-axis, and 5-axis milling

• CNC turning, drilling, tapping, boring

• Swiss-type machining for small, intricate features

Surface Finishing (Optional)

• Anodizing, plating, painting, powder coating, passivation

Key Benefits

• One supplier for casting, machining, and finishing

• Tighter tolerances on critical features

• Shorter lead times with no external coordination

• Full traceability from raw material to finished part

• Cost-effective for volumes from hundreds to millions of parts

Get a Quote

Submit your part designs for a free integrated project review. Our engineering team will recommend the optimal die-casting alloy, machining sequence, and finishing process for your specific requirements.