CNC Machined Cavities Australia
We manufacture custom CNC machined cavities in tool steel, stainless steel, and specialty materials. Mould cavities, die cavities, tool cavities, process cavities built to your exact specifications. Precision manufacturing in Australia. Quote in 2 business days.
Cavity Types We Manufacture
We design and manufacture precision cavities for plastics, rubber, die casting, food processing, medical devices, and packaging applications.
Mould Cavities
Precision plastic injection and compression mould cavities with optimal mould release surfaces and thermal management features.
Die Cavities
Metal stamping and forging die cavities engineered for high-volume production with maximum tool life.
Tool Cavities
Precision cutting tool cavities for drills, end mills, and custom cutting tools with optimised flute geometry.
Process Cavities
Custom cavities for food processing, chemical processing, and manufacturing equipment. Engineered for your specific process.
Multi-Cavity Inserts
Modular cavity inserts designed for fast tool change and scalable production. Simple to complex geometries supported.
Cavity Inserts
Individual cavity inserts for existing mould and die bases. Ready to integrate into your tooling system.
Materials Available for Cavities
Choose from tool steels and specialty materials optimised for cavity durability and production life.
| Material | Grades Available | Best For |
|---|---|---|
| Tool Steel | H13, P20, S7 | Injection moulds, die casting dies, stamping dies |
| Stainless Steel | 420, 17-4 PH | Corrosion resistance, food processing, medical |
| Aluminium | 7075-T6 | Prototype moulds, low-volume production, fast tooling |
| Beryllium Copper | 1700/1750 | Extreme hardness, high thermal conductivity, precious cavities |
Manufacturing Capabilities
Complex Geometry Machining
Complex cavity shapes machined with 5-axis CNC. Undercuts, radii, and intricate features all optimised for production release.
- ✓ 5-axis machining
- ✓ Undercut management
- ✓ Optimised radii
- ✓ Smooth surfaces
Finish Grinding & Polishing
Finish grinding achieves precise surface finishes — Ra 0.4–0.8µm for production moulds, mirror finishes for decorative parts.
- ✓ Surface finish control
- ✓ Polishing available
- ✓ Dimensional stability
- ✓ Shine verification
Heat Treatment & Hardening
Full heat treatment capability with dimensional stability verification. H13 cavities hardened to 38–42 HRC for maximum tool life.
- ✓ Hardening to spec
- ✓ Tempering control
- ✓ Stress relief
- ✓ Dimension hold
Quality Assurance
- ✓All cavities verified to part drawing specifications with CMM inspection
- ✓Surface finish verified to specification
- ✓Heat treatment verified with hardness testing
- ✓Dimensional stability confirmed post heat treatment
- ✓Material certifications and dimensional reports included
Lead Times & Quantities
Prototypes & One-Offs: Simple cavities 3–4 weeks, complex multi-cavity inserts 4–6 weeks, heat-treated cavities 6–8 weeks.
Production Runs: 2, 5, 10, or more cavity sets with cost reduction per set. Scheduled lead times available.
Rush Services: Expedited cavities available for time-critical projects. Contact us for options.
Cavity Manufacturing FAQ
What cavity types can you manufacture?
We manufacture mould cavities for plastic injection and compression moulding, die cavities for metal stamping and forging, tool cavities for precision cutting tools, process cavities for food and chemical processing, and cavity inserts for modular tooling systems.
What materials are best for high-wear cavities?
Tool steel H13 is the industry standard for injection mould cavities — excellent wear resistance and thermal fatigue resistance. P20 is popular for prototypes due to faster machining. For extreme wear applications, hardened stainless steel 420 or 17-4 PH are used.
What tolerances can you hold on cavity dimensions?
CNC machined cavities hold dimensional tolerances of ±0.02mm on general features and ±0.01mm on critical mold release surfaces. Cavity geometry is verified with CMM and matched to part drawing specifications.
What is the typical lead time for custom cavities?
Simple cavities: 3–4 weeks. Complex multi-cavity inserts: 4–6 weeks. Hardened and tempered cavities: 6–8 weeks. Lead times include all machining, heat treatment, and finish grinding.
Can you achieve the surface finish required for mould release?
Yes. Cavities are finish-ground to achieve the precise surface finish required for mould release — typically Ra 0.4–0.8µm for plastic injection. Polishing can achieve mirror finishes for decorative parts.
Do you offer heat treatment for cavity steels?
Yes. We manage hardening, tempering, and stress relief as part of our service. H13 cavities are typically heat treated to 38–42 HRC. Heat treatment with dimensional stability verification available.
Get a Quote in 2 Business Days
Upload your drawing and receive a quote for custom CNC machined cavities. All materials, all processes, delivered on time.
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