CNC Machining Services

Why Choose RapidDone?

RapidDone is a guaranteed high-quality CNC machining manufacturer in China for more than ten years. We can make custom parts based on your own drawing, offer the best-machined parts for your requirements.

You need to know that there are a lot of suppliers in China. But some companies can only produce your parts according to your drawing, they do not have an experienced team to offer technical advice of pointing out our potential design problem or cost-saving tips. At RapidDone, we have a strong engineer team, they are the right one for you in this regard.

Secondly, RapidDone keeps investing in advanced machines to enhance our capability. Thus, we have a compatible machining process type to make your products. We have high precision CNC machining centers, we can make precision parts as small as several millimeters. Meanwhile, we have large-scale machines to support large CNC machining services as big as two meters long.

With our strong machining capability, we are able to make high-precision parts. We can machine both plastic and metal material, offering both metal CNC machining services and plastic CNC machining services.  Our machined parts cover a lot of applications, it includes the aerospace industry, medical industry, automotive industry, the motorcycle industry.

Besides, we work with some best-certificated finishing suppliers in the south of China. We can offer all kinds of surface finishing services based on customers’ requirements, covering both plastic parts and metal parts from machining to EDM cutting manufacturing processes.

Lastly, we are flexible to support both mass production and rapid prototyping order. With a full range of technologies, we are the perfect one-stop shop for all your complete needs.  At the same time, we work 24/7 and have a fast quote ability, all parts can be quoted within 24 hours.

CNC Machining Raw Materials

CNC machine has a very strong machining capability. It can cut almost all the materials in the world, covering both metal material and plastic material.

1. Metal Materials

• Aluminum Series: Aluminum2024, Aluminum5052, Aluminum6061, Aluminum7075
• Steel Series: Stainless Steel 304, Stainless Steel 316, Stainless Steel 316L, Stainless Steel 416
• Titanium Series: Titanium Grade 2, Titanium 6Al-4V
• Copper Series: Brass, Bronze, Copper
• Other metal materials: Zinc, Magnesium

2. Plastic Materials

The plastics cover a full range of types, there are ABS, PC, ABS+PC, PA6, PA66, PVC, PS, POM, PMMA, Acrylic, Teflon, DHPE, HDPE, PPS, PEEK, PEI, PET, PAGF30, PCGF30, PP, and more. 

RapidDone is a traditional manufacturing factory from China, we know that good material is the key to a quality machined part. We conduct good quality control of the material. We source the finest raw materials from the market, ensuring the products we produce have the highest level of integrity and quality. 

CNC Machining Tolerances

Tolerance refers to the amount of deviation in a specific dimension of a part. This parameter defines the dimensional accuracy and it is a must parameter for a drawing.

In RapidDone, we have both normal CNC machines and high precision machines in our Chinese factory. This enables us to make parts with a wild range of tolerance. When working with us, we follow the tolerances standard according to “DIN-2768-1” for the linear dimension(as below list), the metals are with “DIN-2768-1-fine” and the plastics are with “DIN-2768-1-medium”.

However, we can work with you to achieve tighter values as needed. Depending on your technical drawings, tolerances up to 0.02mm are available at RapidDone.

You can contact us for quick advice if you have a tighter tolerance requirement.

Surface Finishes

Surface finish refers to a measure of the overall surface texture. It is characterized by surface roughness, the surface lay, and surface waviness.

Surface finishes are the final step but it is an important process. It creates a desired surface property for cosmetic, corrosion resistance, wears resistance, and more.

RapidDone offers a wild field of surface treatments to fulfill your specific requirements. Below is a quick summary of the most common types.

√ As-Milled

This finish comes from the CNC machining progress directly and results in standard surface roughness. Therefore, it is the most cost-saving finish, offers the fastest turn-around time for part creation.

However, it leaves minor visible tool marks on the surface, so people have to apply another finish if the minor visible mark is not accepted.

√ Type II and Type III Anodizing

Anodizing is the more common finish for Aluminum components and titanium components.

This finish provides an excellent uniform, corrosion-resistant coating, gives a very good protective layer for the part. 

Normally, the thickness of the coating can be produced from 25μm to 125μm.

A lot of colors can be dyed after this anodizing, there are clear, black, red, gold color, and more.

√ Bead Blast

Bead blast finish refers to a light matte texture. It is created by blowing small glass beads against the surface of the machined parts.

By using this finish, people can remove the visible tool mark easily.  At the same time, it can be used to create a different matte texture to achieve different cosmetic requirements. 

√ Powder Coating

This finish refers to the manufacturing process by creating a durable and strong resistant layer on surfaces. 

Inside our factory in China, this can be spayed into different colors for your cosmetic requirements, including black, white, silver, and more.

Cost-effective CNC Machining Tips At RapidDone

As a professional Chinese CNC machining manufacturer for over ten years, we have done thousands of projects and accumulated a lot of machining tips.

Below are some of the important tips.

1. Make a Correct Selection for Material

The material takes a big role in the whole part cost, it is important to consider a lower-cost option if possible. 

For instance, aluminum is always a better option than stainless steel by comparing material cost and machining time cost.

2. Try to Use a Lower Tolerance

The tight tolerances lead to high costs for most of the machined parts, especially when the parts are difficult to machine.

Therefore, an engineer should check more for the technical notes and try to specify a lower tolerance if possible.

3. Keep Part Design Simple

It is well known that big size and complexity features consume more machining time, driving up the cost accordingly. Therefore, it is wiser to design a shorter and simpler part.

For example, undercuts are not good for machining and lead to more machining time. Therefore, it can save costs if keep fewer undercut features.

Meanwhile, compared with raised text, the engraved text is easier to cut. Thus, ensure that you always choose the engraved text.

4. Try to Reduce Workpiece Setups

This tip can help you to produce a tighter tolerance part and make more costs down.

5. Consider a Bigger Cutter

A bigger and shorter bit can lead to a higher cutting efficiency, it is ideal to try to use a bigger cutter for the machining process.

6. Try to Avoid Thin Walls

There are two disadvantages to machining thin walls. First, it raises the rate of damaging the part from vibrations. Secondly, the operator has to use low cutting depths for thin wall features, this leads to an increase in machining times and costs.

7. Stick to Standard Tool Sizes

It can save machining time when the part features correspond to common tool diameters. Besides, it is suggested to maintain the same hole diameter when designing a machined part, this can reduce tool changes, and leads to a faster process.

8. Avoid Deep Cavities

There are two reasons for this tip. First, deep cavity machining asks for specialized tooling once the cavities are 4X deeper than the tool diameter, this specialized tooling can increase more cost.

At the same time, the machining progress takes more machining time and cost.

9. Avoid Deep Threads

Low thread depths can avoid the use of non-standard tools and reduce machining costs.

10. Define Tolerance Correctly

It is a principle that tolerance precision is in line with cost. When we use a high tolerance machine to make high-precision parts, the price is normally higher than the other parts. Therefore, it is more proper to try to submit a tolerance as low as possible as long it does not compromise quality.

CNC Machining FAQ

1. What is CNC Machining?

This refers to subtractive manufacturing progress, it builds parts by removing needless material from a solid block of material by using CNC machines. 

CNC machines are also called “computer numerically controlled machines”，it is automated machines including a program control system. CNC milling machines and lathe machines are the two most common types.

2. What are the Types of CNC Machines?

CNC machines are machine that operates on a variable number of axes along the three linear axes as X, Y, Z.

Based on the degrees of freedom a machine can make cuts in, there are 2-axis, 3-axis, 4-axis, 5-axis, 6-axis, 7-axis, and 8-axis CNC machines. Among them, 3-axis and 5-axis CNC machines are the most common types. 

A 3-axis machine moves in the x y and z-axis, it is the most effective for relatively simple parts machining. 

A 5-axis machine can move in these three additional linear axes along with two more rotational axes, this enables them to make higher precision and more complex work. 

At RapidDone, we have both types of comment machines in our factory. Our in-house 5-axis machines are advanced with high tolerance, this supports us to offer precision 5 axis CNC machining services.

3. What are CNC Machining Advantages?

There are a lot of advantages, some of the main advantages of CNC machining are as below.

First, CNC machines have a very strong machining ability. Almost any material can be used by a CNC machine, so we can build a wind range of different material parts, from plastic parts to titanium parts.

Secondly, CNC machining can do cutting a lot of processes. It includes milling, turning, drilling, threading, and more, all this progress can be made inside one machine. Therefore, the CNC machine can build high precision and complex parts.

Lastly, CNC machining does not need toolings which takes a long lead time at a high cost. Thus, it is ideal for quick-turn orders at a low cost.

4. How to Choose the Right CNC Machining Manufacturer in China?

As a global leader in manufacturing, China is becoming a leading country for the CNC machining industry. In China, there are thousands of CNC machining factories offering prototyping services and high-volume manufacturing services. There, you can easily get lots of options when you decide to work with one of the CNC machining companies.

However, it may not be easy to find a suitable one. To do that, we suggest considering some important factors as below.

First, choose the experienced one with a longer operation time. Generally, an older shop in the CNC manufacturing industry has more experience, they are able to support better for your business.

Secondly, take the one with strong machining capabilities. Normally, a good supplier should have enough CNC machines such as CNC lathe, mill machines including 5 axis machines in-house. At the same time, they should be able to give out a suggestive solution for any engineering question.

Thirdly, it is important to choose a supplier with a good quality control system. This type of factory can ensure your part is finished following a high standard. In other words, there is less chance for a high defect rate.

Next, customer service is another essential thing. Choose the one who can understand your request, and feedback you quickly with the correct answer.

Lastly, it is strongly suggested to order a prototype before you decide to work with a new company. By spending a low expense on the sample, you can run the whole manufacturing progresses with the factory, and check out if everything can fulfill your requirements.

RapidDone is a reliable Chinese CNC machining company for over 10 years. At RapidDone, we guarantee that your parts and your money are safe here. We are sure that we are the proper one for you when you come to the CNC machining business.

5. When are the Best Situations to Choose CNC Machining?

CNC machining is one of the most reliable manufacturing processes, it is used for a variety of applications. However, it has an advantage but also comes with some disadvantages. Below tells the best situation when choosing CNC machining.

• When it is a prototype order or low-volume order, quantity exceeds more than ~1,000
• When it has a high requirement for material selection
• When the part asks for a tight tolerance
• When there is a high requirement for mechanical performance
• When the Geometry is not too complicated for machining
• When there is not a super tight budget for the project
• When the lead time is tight and asks for days

6. What kind of CNC Machining Services RapidDone can Support from China?

RapidDone is one of the experienced machined parts manufacturers in China.

We hold different levels of CNC machines, this enables us to have a  wild range of machining capabilities.
Besides, our engineer team owns specialized knowledge, which enables us to create complex parts without difficulty.

We are so proud that we are the on-demand expert, be able to offer the most reliable services for our customers.
Some of the core services are below:

•  Small and large CNC machining services
•  Metal machining services
•  Aluminum machining
•  Plastic CNC machining services
•  Low volume and CNC rapid prototyping

Start Your CNC Machining Project by Today

CNC machining is also a highly customized service. Therefore, it is better to talk to an experienced team when you have a solid project. 

We are a professional manufacturing supplier in China, you can hire us as your trusted partner when you want to talk about a project. We guarantee you world-class services as we work with you.

Get in touch with us today and let us handle your needs for you.