CUSTOM CNC MILLING SERVICES
What is CNC milling?
CNC milling uses rotating cutting tools to remove material from a workpiece, creating precise parts from metals, plastics, wood, and more. Most machines operate on 3 axes (X, Y, and Z) for detailed work, while advanced 5-axis systems allow for even more complex shapes by rotating the tool head and bed.
Hotean Custom Milling Serivces
Our CNC milling process delivers custom parts in as fast as 1 day. We use both 3-axis and 5-axis indexed CNC milling to machine parts from over 30 engineering-grade plastics and metals. For larger orders, we offer competitive pricing along with first article inspection (FAI) reporting, material certifications, and finishing options like anodizing and chromate plating.
Maximum part size for 3- axis CNC milling
| Size | Metric units | Imperial units |
|---|---|---|
| Max. part size for soft metals [1] & plastics | 2000 x 1500 x 200 mm 1500 x 800 x 500 mm | 78.7 x 59.0 x 7.8 in 59.0 x 31.4 x 27.5 in |
| Max. part for hard metals [2] | 1200 x 800 x 500 mm | 47.2 x 31.4 x 19.6 in |
| Min. feature size | Ø 0.50 mm | Ø 0.019 in |
| [1] : Aluminum, copper & brass [2] : Stainless steel, tool steel, alloy steel & mild steel | ||
Maximum part size for 5- axis CNC milling
| Size | Metric units | Imperial units |
|---|---|---|
| Max. part size for all materials | 2000 x 1500 x 200 mm | 78.7 x 59.0 x 7.8 in 59.0 x 31.4 x 27.5 in |
| Min. feature size | 1Ø 0.50 mm | Ø 0.019 in |
CNC milling tolerances
| Limits for nominal size | Plastics | Metals |
|---|---|---|
| 0.5mm-3mm | ±0.1mm | ±0.05mm |
| Over 3mm to 6mm | ±0.1mm | ±0.05mm |
| Over 6mm to 30mm | ±0.2mm | ±0.1mm |
| Over 30mm to 120mm | ±0.3mm | ±0.15mm |
| Over 120mm to 400mm | ±0.5mm | ±0.2mm |
| Over 400mm to 1000mm | ±0.8mm | ±0.3mm |
| Over 1000mm to 2000mm | ±1.2mm | ±0.5mm |
| Over 2000mm to 4000mm | ±2mm | |
| Please clearly indicate tolerances for nominal sizes below 0.5mm on your technical drawing. | ||
CNC Milling Design Guidelines
Ensure optimal results by following recommended design guidelines for CNC machined parts. These guidelines help achieve precision, efficiency, and manufacturability.
| Feature | Recommended size | Feasible size |
|---|---|---|
| Min. feature size | Ø 2.5 mm | Ø 0.50 mm |
| Internal edges | R 8 mm | R 0.25 mm |
| Minimum wall thickness | 0.8 mm (for metals) 1.5 mm (for plastics) | 0.5 mm (for metals) 1.0 mm (for plastics) |
| Holes | Diameter: standard drill bit sizes Depth: 4 x diameter | Diameter: Ø 0.5 Depth: 10 x diameter |
| Threads | Size: M6 or larger Length: 3 x diameter | Size: M2 |
Available Materials for CNC Milling
We offer a wide range of metals and plastics for CNC milling, ideal for prototypes and end-use parts across various industries. Available materials include:
- Aluminum
- Stainless Steel
- Brass
- Copper
- Titanium
- Mild Steel
- Plastics (e.g., ABS, PEEK, Nylon, Polycarbonate, and Delrin (Acetal))
These materials ensure the durability, precision, and versatility required for demanding applications.
CNC Milling Surface Finishes
Enhance the performance and appearance of your parts by selecting surface finishes that improve various properties such as roughness, hardness, chemical resistance, and cosmetic appeal. Common surface finishes for CNC milled components include:
- Sandblasting
- Anodizing
- Electroplating
- Powder Coating
- Polishing
- Brushing
- Painting
These surface treatments can be tailored to meet the functional and aesthetic needs of any industry.
Customization Services
Hotean offers fully custom CNC milling services based on your designs, blueprints, or samples. Our engineering team works closely with you to modify designs and optimize manufacturing processes, providing value-added solutions for even the most complex requirements. Whether you need unique parts or adjustments to improve functionality, we are here to support you with our flexible, customer-driven approach.
Fast Response & Delivery
With an efficient production system and proven track record, Hotean quickly responds to customer requests and easily handles both small and large batch orders. Our factory’s agility allows us to meet tight deadlines without sacrificing quality. We’ve helped numerous clients reduce lead times by up to 30%, ensuring their projects stay on track.
FAQs
MOST FREQUENT QUESTIONS AND ANSWERSQ1. What is your production capacity for CNC milling?
A1: We have a wide range of CNC milling machines, including 3-axis and 5-axis machines, which can handle both small and large volume orders. Our production capacity allows us to scale according to your needs, whether you're looking for a single prototype or a full production run of thousands of parts. We are committed to meeting tight deadlines without compromising on quality.
Q2. Can you handle custom designs and provide tailored solutions?
A2: Yes, we specialize in custom CNC milling services. Whether you need a completely unique design or have specific modifications to an existing part, our team can bring your vision to life. Our engineers collaborate closely with you to optimize designs for manufacturability, ensuring the most cost-effective and precise outcome for your custom parts.
Q3. What tolerances can you achieve with CNC milling?
A3: We can achieve tolerances as tight as ±0.001 inches (±0.025 mm) depending on the material and part complexity. Our advanced CNC machines and skilled operators ensure that even highly intricate parts are produced with precision. We also offer additional finishing services to ensure that your parts meet your exact requirements, whether it’s surface finish or critical dimensions.
Q4. Can you provide prototypes and low-volume production runs?
A4: Yes, we offer rapid prototyping services, allowing you to test and validate your designs before committing to large-scale production. We also specialize in low-volume production runs, which means you can order small batches with high precision and quality, making us a perfect partner for both prototyping and limited production runs.
Q5. How long will it take to produce my custom CNC milled parts?
A5: Lead time depends on the complexity of the design and order quantity. For most custom CNC milling projects, we can provide parts in as little as a few days to a couple of weeks. We provide accurate lead time estimates upon reviewing your project, and we always strive to meet your deadlines without sacrificing quality.
Q6. What materials can you work with for custom CNC milling?
A6: We can work with a wide range of materials, including metals (aluminum, stainless steel, titanium, brass, etc.), plastics (Delrin, ABS, PVC, etc.), and composites. Whether your project requires lightweight materials, high-strength alloys, or specialized materials, we have the expertise to deliver precise parts that meet your material specifications.
Q7. How do you ensure consistent quality across multiple batches?
A7: We use advanced CNC technology combined with robust quality control processes to ensure consistent results across all batches. Each batch is inspected to meet the same high standards, and we maintain detailed records of every production run. This approach ensures that every part, whether it's the first or the thousandth, matches your specifications.
Q8. What steps do you take to ensure the precision of complex parts?
A8: For complex parts, we use 5-axis CNC milling machines that allow us to machine multiple sides of a part in a single setup, ensuring precision and consistency. We also employ advanced CAD/CAM software to simulate the entire machining process, minimizing the risk of errors and optimizing tool paths for maximum accuracy.
Q9.Do you offer post-processing and finishing services?
A9: Yes, we offer a wide range of post-processing services, including surface finishing (such as anodizing, powder coating, polishing), heat treatment, and assembly. We work with trusted partners for specialized finishes and coatings to ensure your parts are ready for use as soon as they leave our shop.