CNC Milling Service
with Mastars
Get custom milled parts for rapid prototyping and production.
CNC Milling Service
Our factory is equipped with 3-axis, 4-axis, and 5-axis CNC milling machines, delivering professional custom machining services. We efficiently and accurately produce both functional prototypes and end-use parts, with some orders completed in as fast as 1 day. A wide selection of engineering plastics and metal materials is available to meet various application requirements.
Supported by our semi-automated production line and strict quality control system, we also provide FAIR, material certifications, and various surface treatment options including anodizing, chromate conversion, and powder coating. This ensures every part meets the highest quality standards.
CNC Milling Parts Mastars Serves
3-Axis CNC Milling
Where precision aligns with cost-effectiveness—your reliable choice for accurate, straightforward parts.
4-Axis CNC Milling
4-Axis CNC Milling brings your designs to life—effortlessly simplifying multi-sided machining for complex part requirements.
5-Axis CNC Milling
5-Axis CNC Milling-- The master key to complex, intricate parts—bring your boldest designs to life.
CNC Milling Materials
✔️ Aluminum
●Aluminum 5052 ●Aluminum 7075 & 7075-T6 ●Aluminum 6063-T5 ●Aluminum 7050-T7451 ●Aluminum MIC-6 ●Aluminum 6061-T6 ●Aluminum 2024-T3
✔️ Copper
●EPT Copper C110 ●Copper 101
✔️ Bronze/Brass
●Brass C360 ●Brass 260 ●C932 M07 Bearing Bronze
✔️ Plastics
●ABS ●Acetal [Delrin] ●Acrylic ●G-10 Garolite ●Nylon 6/6 ●PEEK ●Polycarbonate ●PTFE [Teflon] ●Polypropylene ●Ultra-High Molecular Weight Polyethylene
✔️ Steel / Titanium / Zinc
●Alloy Steel 4130 ●4140 ●ASTM A36 ●Stainless Steel 15-5 17-4 18-8 303 ●Stainless Steel 303 304 316/316L ●Stainless Steel 416 420 ●Low Carbon Steel ●Steel A36 ●Titanium Grade 2 ●Titanium 6Al-4V ●Zinc Sheet Alloy 500
Applications of CNC Milling
CNC milling is widely used to produce a variety of precision parts:
Engine Components: High-performance engine blocks, cylinder heads and pistons for automotive and aerospace sectors.
Gear Components: Tight-tolerance gears, splines and shafts for machinery and automotive uses.
Medical Implants: Precision hip joints, dental implants and surgical screws for medical applications.
Electronic Housings: Custom enclosures to fit and protect circuit boards and electronic parts.
Custom Prototypes: Rapid prototype development and testing to refine designs before mass production.
Tooling & Dies: Molds, dies and cutting tools supporting diverse manufacturing processes.
Aerospace Parts: Intricate, high-strength turbine blades and brackets requiring extreme precision.
High Quality Parts
Experience unparalleled precision—our advanced milling ensures ±0.01mm tight tolerances, enabling seamless assembly and optimal performance.
Fast Lead Time
Accelerate your manufacturing cycle—RapidDirect’s domestic workshops and advanced machinery ensure fast turnaround to meet critical deadlines.
Engineering Support
Anytime, anywhere—confidently manage CNC milling projects with our experts’ step-by-step guidance to boost design and output quality.
Engineering Support
Our team is ready to help you get your production project started with help from our experts at every step of the process.
Tolerances for CNC Milling
We don't have MOQ, only 1pcs is according to high standard to make, we pursuit the product is perfect to every customer, from 1pcs to million,we are glad to witness and grow together with our customers, that make us proud.
Mastars' CNC Milling Tolerance Standards guarantee precision. Our commitment to exact measurements delivers consistent, high-quality results—optimized for search visibility.
| 3-Axis | 4-Axis | 5-Axis | |
| Maximum Part Size | 1000 x 500 x 500 mm | 1000 x 500 x 500 mm | 4000×1500×600 mm |
| Minimum Part Size | 5 x 5 x 5 mm | 5 x 5 x 5 mm | 5 x 5 x 5 mm |
| Minimum Part Size | 5 x 5 x 5 mm | 5 x 5 x 5 mm | 5 x 5 x 5 mm |
| General Tolerances | ±0.1 mm | ±0.1 mm | ±0.05 mm |
| Lead Time | Delivery of simple parts can be as fast as 1 day | 5 bussiness days for most projects | 5 bussiness days for most projects |
CNC Milling Design Guidelines
| Recommended Size | ||||
| Radii | Internal radii should be at least 1/3 of the cavity depth. Use larger radii whenever possible. | |||
| Threads and Tapped Holes | Diameter Φ 1.5-5 mm, depth: 3 times the diameter. | |||
| Diameter Φ 5 mm or larger, depth: 4-6 times the diameter. | ||||
| RapidDirect can produce threads of any specification and size as required by the customer. | ||||
| Minumum Wall Thickness | For metals: 0.8 mm; For plastics: 1.5 mm. Thicker walls ensure better structural integrity. | |||
| ABS-Like | CNC Milling: Minimum width of 0.5 mm and depth of 0.1 mm. | |||
| RapidDirect can create standard text via CNC engraving or laser engraving as per customer requirements. | ||||
| Holes | Minimum diameter of 1 mm. Hole depth should not exceed 4 times the diameter for best results. | |||
Available Finishes
As-Milled
Bead Blast
Anodized (Type II Or Type III)
Powder Coat
Custom
Don’t see the finish you need? Submit an RFQ and we’ll look into a finishing process for you.
Advantages of CNC Milling
CNC milling offers numerous advantages for manufacturing:
✔️ High Precision: Delivers tight-tolerance parts with consistent accuracy.
✔️ Complex Geometries: Multi-axis movement enables intricate shapes unachievable via manual machining.
✔️ Efficiency: Automated continuous production cuts lead times and boosts productivity.
✔️ Flexibility: Versatile for metals, plastics, composites, suiting diverse applications.
✔️ Repeatability: Programmed runs reproduce identical parts uniformly, minimizing human error.
✔️ Cost-Effective: High-efficiency precision lowers overall costs, especially for large batches.
✔️ Safety: Minimal human intervention reduces workplace accident risks.
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Manufacturing on Demand
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