Custom Machining Services

Custom machining is used for producing high-quality CNC parts by the use of computer-controlled machines. Few processes are more efficient for producing custom parts than CNC machining. It is now possible to purchase and get custom machining parts in a couple of days because of the speed of CAD modeling, the simplicity of online orders, and the availability of global shipping.

What’s more, we provide high-volume production, small-batch machining, and rapid prototyping, with complete order management provided by Sungplastic. In order to meet you at the ideal price and product development stage, our quick custom machining capabilities offer services for metals and plastics as well as flexible manufacturing and delivery choices.

But how do you use the custom machining service? Please learn more and you’ll find out the guide of custom machining and creation of machining parts.

custom machining

What is Custom Machining?

Custom machining, also known as precision machining or CNC machining, is a manufacturing process used to create custom parts and components with high precision and accuracy. It involves the use of computer-controlled machines and tools to remove material from a workpiece, shaping it into the desired shape and size according to specific design specifications.

Reasons for Custom Machining

  • When the desired component is unconventional and unavailable through suppliers.
  • When the desired part boasts distinctive features absent in standard components.
  • When several elements can be amalgamated into a single, customized piece.
  • In situations requiring rapid production of high-quality components during emergencies.
  • Machine shops readily accommodate the production of small quantities of machiningparts.

Advantages of Custom Machining

The subtractive process of CNC machining provides multiple benefits for both prototyping and production parts.

  • Precision and repeatability
  • Tight tolerances
  • Wide range of production-grade materials
  • Quick-turn machining parts within days
  • Lower piece-part price at higher quantities
  • Robust post-processing to improve material properties

Types of Custom Machining Services

Custom machining encompasses a range of services that use computer-controlled machines to create custom parts and components according to specific design requirements.

  • CNC Milling
    CNC milling machines use rotary cutting tools to remove material from a workpiece to create complex shapes, pockets, and holes. This process is suitable for producing CNC parts with 3D geometries.
  • CNC Turning
    CNC turning involves the rotation of a workpiece while a cutting tool is applied to create cylindrical parts like shafts, bolts, and bushings. It’s ideal for producing symmetrical machinedparts.
  • CNC Grinding
    CNC grinding machines use abrasive wheels to precisely grind and finish CNC parts to tight tolerances. It’s commonly used for producing high-precision components, such as bearings and hardened steel parts.
  • CNC Routing
    CNC routers are used for cutting and shaping materials like wood, plastics, and composites. They are commonly used in woodworking, sign-making, and prototyping.
  • CNC Drilling
    CNC drilling machines are used to create precise holes in workpieces. They are often used in applications where hole placement and size are critical.
  • CNC EDM (Electrical Discharge Machining)
    EDM uses electrical discharges to remove material from a workpiece. It’s often used for cutting intricate shapes in hard materials like tool steel.
  • Wire EDM
    This form of EDM uses a thin wire to cut through the workpiece. It’s highly precise and suitable for producing CNC parts with very tight tolerances.
  • CNC Laser Cutting
    Laser cutting machines use a high-powered laser beam to cut through various materials, including metals, plastics, and ceramics. It’s commonly used for cutting complex shapes and profiles.
  • Waterjet Cutting
    Waterjet cutting machines use a high-pressure stream of water mixed with abrasive particles to cut through materials. It’s versatile and can cut through a wide range of materials, including metal, glass, and stone.
  • Custom Fabrication
    Some custom machining shops offer additional services like welding, bending, and assembly to provide complete custom fabrication solutions.
  • 3D Printing
    While not traditional machining, 3D printing is a form of additive manufacturing that can be used to create custom parts and prototypes layer by layer. It’s suitable for producing complex and intricate designs.
  • Multi-Axis Machining
    Some machining services offer multi-axis capabilities, such as 4-axis or 5-axis machining, which allows for more complex and contoured part production.
  • High-Speed Machining
    High-speed machining involves using specialized machines and cutting tools to achieve faster machining rates while maintaining high precision.
  • Surface Finishing and Coating
    Custom machining services may also offer surface finishing and coating options to enhance the aesthetics and durability of machinedparts.
  • Reverse Engineering
    In some cases, custom machining services can reverse engineer existing parts, creating precise replicas or making modifications based on existing components.

The choice of custom machining services depends on the specific requirements of the project, including the material to be machined, the complexity of the part, tolerances, production volume, and budget considerations. Custom machining shops often have a range of machines and capabilities to meet a wide variety of customer needs.

Metal CNC Machining Materials

  • Aluminum
    Lightweight and corrosion-resistant, aluminum is a popular choice for CNC machining. It’s used in a wide range of industries, including aerospace, automotive, and electronics.
  • Steel
    Steel is known for its strength and durability. It’s used in various forms, such as carbon steel, stainless steel, and tool steel, depending on the application.
  • Stainless Steel
    Stainless steel offers excellent corrosion resistance and is often used in applications where hygiene and longevity are crucial, such as medical devices and food processing equipment.
  • Brass
    Brass is valued for its aesthetic appeal and corrosion resistance. It’s often used in decorative and electrical components.
  • Copper
    Copper is an excellent conductor of electricity and heat. It’s used in electrical components, heat exchangers, and plumbing applications.
  • Titanium
    Titanium is known for its high strength-to-weight ratio and corrosion resistance. It’s commonly used in aerospace and medical applications.
  • Nickel Alloys
    Nickel alloys offer high-temperature resistance and corrosion resistance, making them suitable for applications in extreme environments, such as jet engines and chemical processing.
  • Mild Steel
    Mild steel is a cost-effective option for many machining applications, known for its ease of machining and welding.
  • Cast Iron
    Cast iron is used for its excellent wear resistance and damping properties. It’s often employed in heavy machinery components.
  • Bronze
    Bronze is a versatile material with good corrosion resistance and is used in applications ranging from bearings to artistic sculptures.
  • Inconel
    Inconel alloys are known for their high-temperature strength and corrosion resistance, making them suitable for aerospace and high-temperature applications.
  • Hastelloy
    Hastelloy alloys offer exceptional corrosion resistance in highly corrosive environments, such as chemical processing and marine applications.

The choice of metal materials depends on the specific requirements of the part being machined, including factors like mechanical properties, corrosion resistance, electrical conductivity, and thermal characteristics. Different metals are selected to meet the desired performance and functionality of the final component.

Plastic CNC Machining Materials

  • Acrylic (PMMA)
    A transparent plastic known for its optical clarity and weather resistance. It’s often used for creating clear or colored parts in applications like signage, displays, and lighting fixtures.
  • Delrin (Acetal)
    Delrin is a high-strength, low-friction plastic commonly used in engineering and industrial applications. It’s known for its wear resistance and dimensional stability.
  • Polyethylene (PE)
    Polyethylene comes in various forms, including high-density polyethylene (HDPE) and ultra-high molecular weight polyethylene (UHMWPE). It’s used for components requiring chemical resistance and excellent impact strength, such as conveyor guides and wear strips.
  • Polypropylene (PP)
    Polypropylene is a versatile thermoplastic known for its chemical resistance and low moisture absorption. It’s used in applications like medical devices, automotive components, and packaging.
  • Nylon (PA)
    Nylon is a durable and versatile plastic with good mechanical properties. It’s used for making gears, bearings, bushings, and various industrial components.
  • Polycarbonate (PC)
    Polycarbonate is a strong and impact-resistant plastic often used in applications requiring high transparency, such as safety goggles, windows, and electronic housings.
  • Polyvinyl Chloride (PVC)
    PVC is a widely used plastic known for its chemical resistance and electrical insulating properties. It’s used in construction, electrical enclosures, and plumbing.
  • Polyurethane (PU)
    Polyurethane is a flexible and abrasion-resistant plastic. It’s used for creating seals, gaskets, wheels, and custom elastomeric components.
  • Polyether Ether Ketone (PEEK)
    PEEK is a high-performance engineering plastic with exceptional mechanical and thermal properties. It’s used in demanding industries like aerospace and medical devices.
  • Polyphenylene Sulfide (PPS)
    PPS is a high-temperature plastic known for its excellent chemical resistance and dimensional stability. It’s used in applications like automotive components and electrical connectors.
  • Polystyrene (PS)
    Polystyrene is a cost-effective and lightweight plastic used in applications such as packaging, disposable tableware, and model making.
  • Polyimide (PI)
    Polyimide is a high-temperature plastic with excellent thermal stability. It’s used in aerospace and electronics for its ability to withstand extreme conditions.
  • Polyethylene Terephthalate (PET)
    PET is a versatile plastic used in applications ranging from beverage bottles to mechanical parts.
  • Polyoxymethylene (POM)
    POM, also known as acetal, is a strong, rigid plastic with low friction and excellent dimensional stability. It’s used in gears, bearings, and sliding components.

The choice of plastic material depends on factors like mechanical properties, chemical resistance, temperature resistance, and intended use. CNC machining allows for precise shaping and customization of plastic parts to meet specific design requirements.

CNC Machining Finishes

CNC machining finishes refer to the surface treatments and processes applied to the final machined parts to enhance their appearance, functionality, and performance. These finishes are essential for improving the overall quality and usability of the components. There are various CNC machining finishes available, and the choice depends on the material, application, and desired outcome.
Common CNC machining finishes include:

  • Anodizing
    Anodizing is an electrochemical process that forms a protective oxide layer on the surface of aluminum and other metals. It improves corrosion resistance, enhances color options, and provides a decorative finish.
  • Electroplating
    Electroplating involves depositing a layer of metal, such as chrome or nickel, onto the surface of a part to improve its appearance, increase corrosion resistance, and reduce wear.
  • Passivation
    Passivation is a chemical process that removes surface contaminants from stainless steel, improving its corrosion resistance and ensuring it meets industry standards for cleanliness.
  • Powder Coating
    Powder coating involves applying a dry powder to the surface of a part and then curing it with heat to create a durable and attractive finish. It’s available in various colors and provides excellent protection against corrosion.
  • Painting
    Painting involves applying liquid paint to a part’s surface for both decorative and protective purposes. It allows for a wide range of color choices and is commonly used in consumer and industrial applications.
  • Polishing
    Polishing is a mechanical process that smooths and shines the surface of a part, enhancing its appearance and removing imperfections. It’s often used for aluminum, stainless steel, and other metals.
  • Bead Blasting
    Bead blasting uses abrasive media to create a uniform and matte finish on the surface of a part. It’s effective for removing burrs and creating a textured appearance.
  • Laser Marking/Engraving
    Laser marking and engraving use lasers to etch text, logos, or patterns onto the surface of a part. It’s commonly used for branding, identification, and customization.
  • Heat Treating
    Heat treating processes like annealing, hardening, and tempering can be applied to metal parts to improve their mechanical properties, such as hardness and strength.
  • Passive Film Formation
    Some materials like titanium naturally form a protective passive film when exposed to air, enhancing their corrosion resistance and durability.
  • Surface Grinding
    Surface grinding is a precision machining process used to achieve tight tolerances and improve surface flatness and smoothness.

The choice of CNC machining finish depends on the specific requirements of the part, including its function, aesthetics, and environmental conditions. Each finish offers unique benefits and characteristics, allowing manufacturers to tailor the final appearance and performance of the components to meet their intended purpose.

Custom Machining Applications

Custom machining finds applications in various industries and sectors where precision, customization, and quality are essential.

  • Aerospace
    Turbine blades, engine parts, and structural elements.
  • Automotive
    Engine components, transmission parts, suspension components, and brake systems. Also used for custom performance parts and prototype development.
  • Medical Devices
    Components for surgical instruments, implants, prosthetics, and diagnostic equipment.
  • Electronics
    Intricate components for electronic devices, including connectors, heatsinks, housings, and circuit board components.
  • Oil and Gas
    Valves, drill bits, wellhead components, and specialized equipment used in drilling, extraction, and processing.
  • Defense and Military
    Components for military vehicles, weapons systems, and communication devices.
  • Energy and Power Generation
    Parts for turbines, generators, and other power generation equipment.
  • Tool and Die Making
    Molds, dies, and precision tools for various industries, including manufacturing, injection molding, and stamping.
  • Prototyping
    Engineers and designers use custom machining for rapid prototyping of new products and concepts, allowing them to test and refine designs before full-scale production.
  • Jewelry and Watchmaking: Intricate and precise components like watch gears, bezels, and custom jewelry designs.
  • Dental: Dental implants, crowns, bridges, and orthodontic appliances with high precision and biocompatible materials.
  • Mining: Components used in drilling equipment, conveyors, and extraction machinery.
  • Railway and Transportation: Railway components, including wheels, axles, and track infrastructure components.
  • Marine and Shipbuilding: Parts for propulsion systems, navigation equipment, and vessel structures.
  • Construction: Specialized construction equipment and components, such as crane parts and structural elements.
  • Agriculture: Components for tractors, combines, and other machinery.

Sungplastic is a Chinese manufacturer with rich experience in custom machining. According to different product development requirements, flexibly adjust the manufacturing process to achieve high quality, high efficiency and more economical.

We offer a variety of manufacturing services: Rapid Prototyping, Rapid Manufacturing, Injection Molding, CNC Machining and Metal Stamping. You can choose from a variety of plastics, silicone rubber or metal for your product. Whether it is mass production or small-volume customization, Sungplastic is always committed to providing assured, efficient and more economical one-stop processing services for your projects.

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