CNC Plastic Machining

Precision CNC plastic machining services offer you custom plastic parts

High-speed automated machining of all types of plastics

Variety of parts from prototypes to engineering models to end-use products

    Please submit your drawings to us. Files can be compressed into ZIP or RAR folder if they are too large. We can work with files in format like pdf, sat, dwg, rar, zip, dxf, xt, igs, stp, step, iges, bmp, png, jpg, doc, xls, sldprt.

    All uploads are secure and confidential

    At Runsom Precision, you can experience the best CNC machining services for plastics, the fastest lead time, and the highest quality of CNC machined plastic components conforming to the specifications your project needs.

    CNC Plastic Machining Supplier | Custom Plastic Parts Manufacturer

    Our CNC machine shops have been fitted with a complete set of the most advanced machines, thus you can enjoy superior machining capacities and competitive prices here. We treat every order we’ve received with the greatest efforts and personal commitments to ensure it is completed in a specific time and guaranteed quality. There is a wide range of plastics and post-processing options to perfectly fulfill small production runs or complex prototyping projects. Work with our global supply chain of plastic CNC machining.

    Our experts and technicians utilize the latest 5-axis CNC machining technologies to offer CNC plastic machining services, efficiently producing high-precision plastic components and prototypes. Our skilled team of machinists is proficient in customizing CNC machined plastics with close tolerance, ensuring that our competitive pricing never compromises quality. Furthermore, we do not impose any minimum order quantity requirements, catering to a wide range of customer needs.

    CNC plastic machining

    What is CNC Plastic Machining

    Plastic CNC machining is a viable subtractive manufacturing process in which a moving cutting tool removes material from a solid block of plastic that is placed against it, thus complicated plastic components are created. This process may involve 3, 4, and 5-axis CNC machines to produce multiple sides and end plastic parts with intricate geometries.

    Compared to some plastic machining methods like 3D printing or injection molding, CNC machining plastics can be a more ideal option for projects needing tighter tolerances and can be used with a wider array of polymer materials. Moreover, it is more suitable for low-volume production versus injection molding as it’s more cost-effective.

    Advantages of CNC plastic machining
    What is CNC Plastic Machining

    Advantages of Plastic CNC Machining

    Since plastic CNC machining needn’t make a mold, it’s a preferable alternative for one needing a prototype to be made in a fast cycle time. So the process of machining the prototype will be faster.

    Some processes like injection molding consume many resources and much time in building molds, but plastic CNC machining is free of that. Therefore, the expense involved in part production is much cheaper than other processes.

    For parts to be applied to high-precision industries like aerospace or medical, CNC machining plastics may be a significant option for production. That is because it can conform to tight tolerance standards.

    The plastic part machined by CNC machining holds its distinguished resistance to corrosion over metal products due to the fact that it can prevent from being rusting after extended use.

    When to Use CNC Plastic Machining for Production

    It could be such a difficult task for you to choose the exact production process. If your project requirements fit these factors below, you can take the plastic CNC machining into account.

    CNC Plastic Machining for Production

    Main factors in choosing plastic CNC machining

    1. There is a limited budget for your project
    2. There is only a need for plastic prototypes
    3. There requires a fast cycle time
    4. There are demands for a low volume of production

    Surely, you can also get valuable suggestions from professional engineers on the compatibility of CNC plastic machining for your part production.

    At Runsom Precision, comprehensive customer service is available for the whole day, from which our team of experts with highly skilled experience will offer you the most suitable solution to your project and a helpful evaluation on how to optimize your plastic parts. Contact our engineering team now or get started on your project with an instant quote.

    CNC Plastic Machining Types We offer

    Plastic CNC milling

    Plastic CNC millingTips for CNC milling plastics:

    1. Use carbon tooling when machining a thermoplastic that has been hardened with carbon fibers or glass.
    2. Take clamps to realize higher spindle speeds.
    3. Utilize end mills to relieve stress concentration by forming rounded internal corners and pockets.

    Plastic CNC turning

    Plastic CNC turningTips for CNC turning plastics:

    1. Ensure there is a negative back rake in cutting edges to minimize rubbing.
    2. Using good C-2 grade carbide inserts.
    3. Polish top surface to form a flat surface finish and reduce material buildup.
    4. Utilize generous relief angles for cutting edges.

    Plastic CNC drilling

    Plastic CNC drillingTips for CNC drilling plastics:

    1. Keep CNC drill bits sharp to reduce the stress on the part. Different lip angles should be accommodated according to different types of plastics.
    2. Pay attention to the ejection of the CNC drill. It is important to make sure the drilling depth not to exceed three or four times the drill diameter and to lower the feed rate when the material nearly is exited from the drill.

    Plastic Swiss CNC machining

    Plastic Swiss CNC machiningTips for Swiss CNC machining plastics:

    Choose the correct tooling speeds to eliminate temperature restrictions occurred when machining with thermosetting polymers or thermoplastics.

    • dimension

      Furthermore, we also have the capabilities of 3D programming, CAD design, and CAM programming.

    • accuracy

      Our precision CNC machines make it possible to process all kinds of plastic components ranging from micro milling to 6’ x 10’ parts.

    • cutting tools

      Plastic CNC milling machines used by Runsom Precision mounted with dual spindles can deal with complex projects in a fast cycle time and with fewer setups, showing better performance than traditional single-head production methods.

    Plastic Materials for CNC Machining We Work With

    Runsom Precision excels in the CNC plastic machining of:

    Start Your Plastic CNC Machining Project Now

    Runsom Precision has outperformed our competitors with custom CNC plastic machining services for more than ten years. Every part we produce fits tight tolerance and high standards. We have stocked a comprehensive range of thermoset and thermoplastic-engineered materials and mastered unmatched machining capabilities, including plastic milling, turning, drilling, and Swiss CNC machining with micron tolerances. We are forging ahead to keep innovation and improve our plastic CNC machining services for global clients. Get an instant quote today!

    Applications of CNC Machined Plastic Parts

    CNC machining is a common manufacturing technology used for creating plasic parts. Given its relatively competitive price and machining with ease, CNC machined plastic components are widely used for various applications in different indusries, including:

    1. Automotive

    -fire blockers, air conditioner vents, valve seats, gauges, dials, switches, etc.

    2. Aerospace

    -pump gears, rudders, fuselages, ventilation ducts, etc.

    3. Electrical

    -electrical insulators, switches, electrical insulation materials, watertight seals, etc.

    4. Pharmaceutical

    -dentistry surgical guides, endoscopic probes, cardiac implants, sterilization trays, etc.

    5. Food

    -assembly line pieces, spray bars, etc.

    6. Military

    -communication devices, transportation vehicles, etc.

    Our Incredible CNC Machining Capabilities in Plastics

    We have firm faith and determination on producing high-quality parts, and other advantages you can enjoy working with us are as follows:


    A wide range of materials in stock

    Precision Machining

    Advanced Machinery with high efficiency

    functional testing

    All series of plastics satisfy diverse demands


    CNC machined plastic parts with high strength


    Standardized inspection reports for each order

    Transform a concept

    Samples, sketches, or prints turned into real production

    Runsom Precision always focuses on providing parts for our clients with superior precision and versatility. Our excellent support of the plastic CNC machining service for global customers makes a difference that thousands of clients place their orders in our company. We have the capability to deal with all kinds of applications and projects with effective solutions as per your time and money.

    Why Choose Us for Your CNC Plastic Machining

    Runsom's Experience of CNC Machining

    You may rest assured that we have an experienced engineering team, advanced production, inspection equipment, and mature management systems.

    15 Years of Experience

    Quality Reliability Provided by Runsom

    Certificated by ISO9001:2015, we have strict requirements for quality. To meet high quality, we have a sound quality control system and well-equipped measuring devices.

    Quality Reliability

    Save Your Cost Using CNC Machining Plastics

    We have optimized the manufacturing process combinations that will greatly save the production cost with the production capabilities of plastic parts expended.

    Save Your Cost

    Gallery of Plastic CNC Machining Parts

    CNC Machining Plastics FAQs

    In plastic CNC machining, a plastic block is processed to form a final desired shape, size, or surface finish. This process is also known as a subtractive technology since unwanted geometry is removed from a raw block of plastic. There are a wide variety of resins to choose from, so the part can be exactly created in the proper material. This rapid prototyping method is economical and efficient for unit production for functional testing.

    To get more details on CNC plastic machining, you can follow the guideline - CNC Plastic Machining: What Is It, Creating Prototypes, Operations, Materials

    The cost of plastic CNC machining is determined by several aspects, including the size, geometry of the part as well as the needed type of plastics. All the factors will have a direct impact on the choice of the type of machine, the manufacturing time, and the production cost.

    Our intelligent quote system can make correct pricing quickly from the 3D CAD file, based on thousands of valuable data from previous CNC machining orders. What you need to do is just upload your CAD file online. The free quote will be sent to you within 24h.

    ABS may be an all-purpose plastic for CNC machining because of its excellent dimensional stability and machinability. POM can be taken into account when the application requires high stiffness and low friction. Other specific requirements like mechanical or aesthetic properties will greatly determine the final selection of plastics.

    There would be much fewer surface finish choices in plastic CNC machining when compared to metals. However, the post-processing in CNC machining of plastics might not be needed anymore, because a near-net final surface would be left when the operation of this process is carried out properly.

    Suitable CNC plastic finishes include:

    • Bead Blasting
    • Painting
    • Brushing

    There is no need to make a mold in CNC machining plastic, so it could be cost-saving and time-saving for rapid plastic prototyping.

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