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China CNC Machining

CNC Machining Services

RapidDone is one of the professional providers of CNC machining in China. With our precision 3-axis, 4-axis, 5-axis precision CNC machines, and experienced support team, we can provide a full range of custom machining services including high precision drilling, milling, turning, grinding machining, and more.

As a one-stop solution to manufacturing factories, we can supply all kinds of high-quality CNC machined parts to our customers. We offer both low volume and high volume services with a short lead time. Send your inquiry today, we will give you back with perfect parts.

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Our Outstanding CNC Manufacturing Capability

cnc milling services
Turning Services
cnc prototyping services

RapidDone provides several milling services in China including CNC milling, carving milling, carving milling, and right-angle milling. With our high precision CNC milling machines, we can produce precision parts with complex shapes and geometries

With our high-level turning manufacturing capability in China, RapidDone covers a full field of services including General Car/Lathe, Vertical Lathe, Dual Spindle Lath, and more. We can supply quality lathe parts such as pins, shafts, and spacers, worms, spheres, and more.

RapidDone can do CNC prototype machining for your small batch requirement from China. With our inhouse advanced CNC machines and polishing ability, we can support with rapid and fast prototyping services, getting your small batch order ready as fast as several days.

The reliable Chinese CNC Machining company

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√ Best Price
There is good control for our cost for all the machined parts, we can save up to 30% in costs compared with other suppliers in China.

√ High Quality
With our well-experienced quality team, we can keep a low defective rate for your custom CNC parts and promise to keep your machined part safe here.

√ High Precision
There are advanced CNC machines inside our factory, we can offer high precision parts. The high accuracy and repeatable tolerances can reach as tight as +/-0.001″.

√ Wide Material Selection
Our service offers a wide variety of certified materials selection for over 50 types, including aluminum, titanium, stainless steel, plastics, and more.

√ Custom Finishing
RapidDone offers many surface finishing treatments on both metal and plastic machined parts, fulfilling all your custom requirements.

    Custom CNC Machined Parts to Skyrocket Your Brand

    Aluminum Milling Part
    ABS Plastic Machined Part
    Aluminum Turning Part

    Aluminum Milling Part

    Precision CNC Machining Part

    ABS Plastic Machined Part

    Aluminum Turning Part

    Why RapidDone CNC machining Service?

    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 surfaces finishing services based on customer’s 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 Services From China-The Ultimate Guide

    Are you looking for a CNC Machining service in China for your business? Or, are you looking for some design suggestions for your custom machined part projects?

    Well, no worry. Based on our ten years of manufacturing experience in China, today I am going to walk you through the entire process and this guild shall cover everything you need to know – from material selection to finishes selection, and more.

    Keep reading and you’ll find it helpful.

    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 service and high-volume manufacturing services. There, you can easily get lost of options when you decide to work with one of the Chinese 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 longer operation time. Generally, an older shop in the CNC manufacturing industry has more experience and be able to support better for your business.

    Secondly, take the one with strong machining capabilities. Normally, such a supplier should have enough CNC machines such as CNC lathe, CNC mill machining 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. Such a factory can ensure your machined part is finished following with a high standard. In other words, there is less chance to be defective.

    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.

    What is the CNC machining?

    It refers to subtractive manufacturing progress that 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 an automated machine including a program control system. CNC milling machine and CNC lathe machine are the two most common types.

    What are the types of CNC machines?

    CNC machines are the 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 inhouse 5-axis machines in our Chinese factory and offer precision 5 axis CNC machining services.

    What are the common CNC machining 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.

    Metal materials

    • Aluminum Series: Aluminum2024, Aluminum5052, Aluminum6061, Aluminum7075
    • Steel Series: Steel 1080, Stainless Steel 304, Stainless Steel 316, Stainless Steel 416
    • Titanium Series: Titanium Grade 2, Titanium 6Al-4V
    • Copper Series: Brass, Bronze, Copper
    • Other metal materials: Zinc, Magnesium

    Plastic materials

    The plastics cover full range 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 have 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. 

    How to select machining material correctly?

    A successful project should consider a lot of parameters including material selection, machining parameter setting, finishing selection, and more. Among them, material selection is the first step but also an important step.

    During the project, the designer defines the important material characteristics of the design, includes hardness, rigidity, chemical resistance, heat treatability, thermal stability. However, a lot of design allows flexibility that won’t compromise quality.

    To make a correct selection, it should consider both cost and quality. We suggest a dialogue with engineers, the engineers should into the alternative material and select the best cost-saving material while maintaining the design quality.

    What are our CNC Machining Tolerances?

    CNC Machining Tolerance

    The 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.

    We follow the tolerances standard according to DIN ISO 2768-1, the linear dimension is showed in the table below.

    DIN ISO 2768-1

    However, we can work with you to achieve tighter values as needed. Depends on your technical drawings, tolerances up to 0.020mm are available at RapidDone. 

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

    How to define tolerance for your machined parts correctly?

    When engineers define the tolerance, they consider several parameters such as the form, fit, and function of a part.

    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.

    What are CNC Machined Part Surface Finishes?

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

    This finish comes from the CNC machining progress directly and results in surface roughness of 125 uin. Therefore, it is the most cost-saving finish, offers the fastest turn-around time for parts.

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

    Type II and Type III Anodizing Finish

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

    This finish provides 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 Finish

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

    With this finish, people use it to remove the visible tool mark.

    At the same time, it can be used to create a different matte texture to achieve different cosmetic requirements. 

    Powder Coating Finish

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

    There are two steps: the painting step and the baking step. 

    The painting step is to create a layer on the part surface by spraying the powdered paint onto the targeted surface first.

    The baking step, on the other hand, is to put the painted part into an oven for baking under high temperatures. This baking process can make the painting to be attached on the surface firmly.

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

    What cost-effective CNC machining tips do you recommend?

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

    Below are some of the important tips.

    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.

    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 for machining.

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

    Keep part design simple

    It is well known that big size and complexity features consume more machining time, drive 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 cost if keep the undercut amount as small as possible.

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

    Try to reduce workpiece setups

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

    Consider a bigger cutter

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

    Try to avoid thin walls

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

    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.

    Avoid deep cavities

    There are two reasons for this tip. First, it asks for specialized tooling once the cavities are 4X deeper than the tool diameter, this specialized tooling adds more cost for the machined parts.

    At the same time, it takes more machining time and cost for a deeper cavity.

    Avoid deep threads

    To keep low thread depths, it can avoid the use of non-standard tools and reduce machining costs.

    What kind of CNC machining services RapidDone can support from China?

    RapidDone is one of the big machined parts manufacturers in China for over ten years.

    We hold different levels of CNC machines, this enables us to have a  wild range of machining capability.
    Besides, our engineer team owns specialized knowledge, it 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

    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 order at a low cost.

    When are the best situations to choose CNC machining

    When to choose CNC machining

    CNC machining is one of the most reliable manufacturing processed, 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


    In short, I think the above should cover the base points you want to know about CNC machining. 

    However, CNC machining is also a highly customized service. Therefore, it is better to talk to the 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.

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