Custom CNC Milling Services
First Mold uses 3-axis, 4-axis, and 5-axis CNC milling machines to provide milling services with tolerances as low as ±0.005mm.
- 0 Minimum Order Quantity
- 100+ Engineering Materials
- 40+ CNC Milling Centers
Advanced CNC Milling Capabilities
CNC milling service is one type of our CNC machining services. We are equipped with 3-axis, 4-axis, and 5-axis CNC milling equipment. It’s suitable for precision functional parts, structural components, prototypes, non-standard special-shaped parts, complex multi-curved parts.
Milling prototypes are used to test the shape, assembly, and function of your metal or plastic products. The shortest delivery time can be as fast as three days.
Small-batch milled parts let you launch products quickly and test market response. Their main benefit is keeping inventory risk to a minimum.
High-volume milled parts ensure consistent dimensions and lower the cost per part as much as possible.
Our Milling Capability
| Item | Specification |
|---|---|
| Mills | 40 |
| Department Headcount | 60 |
| Monthly Production | 100,000 units |
| Tolerance Standard | ISO‑2768‑M (for both metal and plastic) |
| Maximum Tolerance | ±0.0254mm (±0.001″) |
| Maximum Milling Width | 800mm (31.50″) |
| Maximum Machining Height | 800mm (31.50″) |
| Maximum Machining Depth | 200mm (7.87″) |
| Minimum Machining Dimension | 5mm × 5mm × 5mm (0.2″ × 0.2″ × 0.2″) |
| Maximum Machining Depth | 200mm (7.87″) |
| Fastest Delivery Time | 3‑7 Days |
Tips: Looking for cylindrical part manufacturing? Explore our CNC Turning Services.
Industries We Can Mill For & Case Studies
High‑precision automotive components including steering knuckles, brake calipers, cylinder heads, control arms, transmission housings, intake/exhaust manifolds, timing covers, wheel hubs and shock absorber brackets.
Milled structural brackets, drone frames, engine housings, blisks, landing gear fittings, wing fittings, hydraulic manifolds, and actuator housings using Aluminum and Titanium.
Precision‑milled medical parts include surgical instrument handles, diagnostic equipment enclosures, orthopedic bone plates and dental implant abutments, milled from biocompatible plastics and stainless steel.
Milling Cases
Supported Milling Materials
Our CNC milling service supports over a hundred materials. Listed below are several commonly used ones.
Aluminum
Milled aluminum alloy stays lightweight, cuts easily, and conducts heat well for general structural parts and heat sinks.
Titinium
Milled titanium alloy offers high strength and low weight, but its poor thermal conductivity and low machinability require slow milling speeds and rigid setups.
Steel
Milled steel alloy delivers high strength and wear resistance for heavy-duty parts, yet its hardness requires slower mill speeds than aluminum.
Stainless Steel
Milled stainless steel provides excellent corrosion resistance and high strength, yet its work-hardening nature demands slow mill feeds and sharp tools.
Magnesium
Milled magnesium alloy is extremely lightweight and easy to cut, but its high flammability demands special fire prevention measures during any mill process.
PEEK
Milled PEEK provides high strength and chemical resistance for lightweight parts, yet its low thermal conductivity and high melting point require slow mill speeds without coolant.
ABS
Milled ABS plastic is tough and easy to cut for prototype parts, but its low melting point restricts high mill speeds to prevent material smear.
PA
Milled PA offers low friction and good wear resistance for light parts, yet its low melting point requires short mill strokes to prevent melt.
Advanced CNC Milling Capabilities
You won’t have to worry about inaccurate dimensions, poor precision, inability to scale up production, or missed delivery deadlines.
First-Time Perfect Assembly
First Mold’s precision milling achieves localized accuracy down to ±0.005 mm, and the first-time perfect assembly rate exceeds 99%. We also provide full inspection reports.
No Costly Rework
Our top-priority DFM identifies high-risk structures before machining, so you don’t waste extra cost and time on trial and error.
Sufficient Production Capacity
We have plenty of equipment and can add more on a large scale at any time. Your project can scale up to mass production of over 100,000 units.
4 Steps to Your Custom CNC Milled Parts
We use a convinient online ordering model to accelerate your project. Simply prepare your 3D CAD file, and our engineering team will guide you from initial design to final production.
Submit Your Milling Requirements
Submit your design file to initiate the milling process.
Milling DFM & Quoting
Evaluate your part’s geometry and give you feedback
CNC Milling Production
Efficient precise shaping for your desired parts.
Inspection & Delivery
CMM inspection and secure shipping to the destination.
We are trusted by many clients
FAQ for Custom Milling Services
I’m new to the industry. Where can I learn more about milling?
Our article “What Is Milling” does a great job of explaining all the essential knowledge about milling. In addition, we also have detailed introductions to topics such as “Milling Machines” and “Climb Milling vs. Conventional Milling.”
Does your CNC milling service support one-off prototyping?
Absolutely, no problem. We are an advanced CNC machining factory in China and a well-regarded rapid prototyping company. One-piece prototyping is completely within our scope of business.
How do you pack high-gloss milled parts for international transport?
Our standard packaging process for high-gloss milled parts:
- Anti-corrosion: Each part is coated with VCI rust-preventive oil.
- Moisture barrier: Vacuum-sealed in PE film with 5g silica gel desiccant per unit.
- Cushioning: Custom-machined EVA foam inserts (density 45–50 kg/m³) support all critical surfaces, preventing contact between parts.
- Outer crate: Reinforced 9mm plywood crate, nailed and strapped, with ISPM 15 heat-treatment mark (compliant with international wood packaging regulations).
- Load security: Internal blocking/bracing to prevent shifting during transit.
- Pre-shipment approval: We send you a complete packing diagram + actual photos for sign-off before closing the crate.
For air freight, we reduce crate weight; for sea freight, we add corner guards and increase stacking strength. All packaging is tested to withstand standard handling and vibration.
What type of milling part design do you recommend?
Arge fillets, shallow cavities, medium wall thickness, standard dimensions, and reasonable tolerances — this is what we recommend as a “machining-friendly” design. If you have specific drawings, you can upload them directly for our free DFM analysis.
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