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Insert Molding

At XC Machining, we specialize in Insert Molding Services that combine precision molding with insert placement to create high-performance, durable parts. Whether you’re working with metal, plastic, or other materials, our insert molding solutions ensure the highest standards of quality and efficiency for your custom parts.

insert molding parts showing in image
Insert molding process

Leading Insert Molding Company for Custom Parts

As a trusted insert molding company, we provide comprehensive insert molding solutions for industries requiring robust, high-quality components. Our team uses advanced molding techniques to insert materials such as metal or electronics directly into plastic, offering stronger and more cost-effective parts that meet your unique needs.

CNC Machining Small Parts

High Volume Insert Molding Supplier for Large-Scale Production

As a reliable high volume insert molding supplier, XC Machining is equipped to handle large-scale production runs, ensuring consistent, high-quality results for bulk orders. XC Machining offers rapid prototype insert molding solutions, allowing you to quickly produce functional prototypes for testing and validation. 

Whether you need thousands or millions of parts, our efficient process minimizes waste, maximizes output, and reduces lead times without compromising quality.

Why Choose Insert Molding with XC Machining?

Provides rapid prototyping and precision parts using advanced CNC technology, ensuring exceptional quality and precision. Trust Insert Molding to meet your exacting standards.

Strong Manufacturing Capabilities

In our facility, you have a variety of machines for part production, including CNC turning lathes, milling machines, injection molding equipment, state-of-the-art 3D printing technology, and more.

Flexible Material Selection

At XC Machining, we try to ensure your choice is not limited, which is why we offer over 60 materials for you to choose from for your prototypes and products.

24/7 Engineering Support

In-depth service engineers with the knowledge to address your manufacturing inquiries are available from XC Machining. Our engineers are always on the ground to offer valuable advice.

Choice of Custom Finishes

We offer a range of surface treatments and custom finishes on solid metal and plastic parts, including anodizing, spray painting, vapor polishing, sandblasting, silk screening, etc.

Tolerances for Injection Molding

Injection molding is an efficient and cost-effective manufacturing process used for producing high-precision plastic components in large quantities, typically used in industries like automotive, medical, and consumer electronics.

Description Specification
Precision Tolerances Achievable tolerances as tight as +/- 0.001 inches (0.025 mm)
Surface Finish Ra 32 µin (0.8 µm) to Ra 63 µin (1.6 µm)
Minimum Wall Thickness 0.5mm
Minimum End Mill Size 0.3mm
Minimum Drill Size 0.8mm
Maximum Part Size 1000×1000×500 mm
Minimum Part Size 5×5×5 mm
Production Volume Prototyping: 1-500 pcs
  Low Volume: 501-10,000 pcs
  High Volume: Above 10,000 pcs
Lead Time 7-10 business days for most projects. Delivery of simple parts can be as fast as 3 days.

 

Materials for Insert Molding Parts

Leading companies and engineers rely on XC Machining for rapid iterations and durable, high-quality parts. Whether it’s for prototyping or full-scale production, our wide range of materials ensures we meet the unique requirements of any Insert Molding project with precision and speed.

Thermoplastics

ABS (Acrylonitrile Butadiene Styrene)

PC (Polycarbonate)

PC-ABS Blend

Nylon (PA6, PA66, often glass-filled)

PBT (Polybutylene Terephthalate)

POM (Acetal / Delrin)

PE (Polyethylene – HDPE, LDPE)

PP (Polypropylene – Homopolymer, Copolymer)

PVC (Rigid)

TPE / TPU (for soft-touch or flexible areas)

Brass (C360, C260)

Stainless Steel (304, 316)

Carbon Steel (1018, 1045)

Aluminum (6061, 2024 – less common due to softness)

Copper (C110)

Plastic Injection Molding Materials

Surface finishes for Insert Molding

Insert molding involves placing metal or other materials into a mold and then injecting plastic around them. The surface finish ensures proper bonding and aesthetic quality.

Sanding
As-molded finish in insert molding. Direct-from-mold surface, no post-processing.

Sanding is used to smooth the plastic parts, removing any burrs or rough edges that may form around the inserted material, ensuring proper fit and finish.

Polishing
Textured mold finish for insert molding. Creating unique haptic surfaces on plastics.

Polishing enhances the visual quality of insert molded parts, providing a glossy, smooth finish that is both aesthetically pleasing and functional for part usability.

Electropolishing

Electropolishing is used to smooth the surface of metal inserts, improving their finish and corrosion resistance, while enhancing the overall appearance of the molded part.

Brushing
Polished A1-A3 finish for insert molding. High-gloss, smooth plastic components

Brushing gives the metal inserts a uniform textured surface, reducing glare and creating a matte finish that is often desirable in automotive and industrial components.

Texturing
Bead blasting for insert molding surface finish. Achieving a uniform matte texture on parts

Texturing is applied to both the insert and molded plastic surface, adding a functional grip and aesthetic pattern, commonly used in consumer electronics and automotive parts.

Vibratory Finishing
Overmold transition blending in insert molding. Seamless integration of materials

Vibratory finishing helps smooth out the plastic surface of insert molded parts, removing burrs or rough edges, particularly when parts have complex shapes or intricate designs.

Specialist industries

XC Machining is a trusted partner for industries demanding complexity, reliability and precision. Our expensive experience in producing millions of high quality components brings unmatched expertise to every project.

Our services cover a diverse range of applications to ensure that we meet the unique needs of each sector with great care.

XC Machining supports the automotive industry with cutting-edge CNC machining solutions, enabling the production of complex parts that drive efficiency

For the semiconductor industry, XC Machining offers CNC machining services that meet the high precision demands necessary for manufacturing components

Our CNC machining services are pivotal in the energy sector, where precision and durability are essential. XC Machining supports the

XC Machining is a trusted partner in the industrial machinery sector, offering CNC machining solutions that ensure the robust and

XC Machining delivers precision machining solutions for the electronics industry, producing intricate components that meet the exacting standards required for

XC Machining offers specialized CNC machining services for the communications industry, crafting precision parts that are vital for the infrastructure

Our Insert Molding service capabilities

As a leader in precision manufacturing, we offer a wide range of capabilities that cater to both one-off prototyping and low-volume production. We specialize in delivering geometrically complex and highly cosmetic parts, ensuring the highest quality standards. At XC Machining, we pride ourselves on being the go-to manufacturer for all your Insert Molding needs, providing reliable and efficient solutions under one roof.

The Power of Insert Molding to Achieve Lasting Durability

Insert molding is a cutting-edge manufacturing process that seamlessly integrates metal components with plastic parts in one streamlined operation. This advanced technique enhances structural integrity and functionality, making it the go-to solution for industries that demand durable, lightweight, and efficient components. 

By combining metal and plastic into a single part, insert molding delivers superior performance while cutting down production steps, saving both time and costs.

At XC Machining, our insert molding services cater to a wide range of industries, including automotive, aerospace, energy, industrial machinery, electronics, and communications. We provide innovative solutions designed to meet the demands of modern manufacturing.

The Edge of Insert Molding in Manufacturing

Enhanced Durability and Strength

Insert molding combines the flexibility of plastic with the rigidity of metal or other material inserts. This dual-material design results in components that are more durable and resistant to stress and wear. These longer-lasting parts are perfectly suited for demanding applications in industries like automotive and industrial machinery.

Reduced Size and Weight

By integrating multiple components into one, insert molding eliminates the need for separate assembly steps, creating compact and lightweight products. This is particularly advantageous in the automotive and aerospace industries, where reduced size and weight directly translate to improved efficiency and performance.

Applications Across Multiple Industries

Insert molding has broad applications across various sectors:

  • Automotive: Door handles, mirror housings, and electrical connectors.
  • Electronics: Switches, connectors, and heat sinks.
  • Medical Devices: Surgical instruments, implants, and catheters.
  • Consumer Goods: Toys, electronic enclosures, and appliances.

Why Insert Molding is the Right Option?

Cost-Effectiveness

Insert molding simplifies production by incorporating inserts directly into the molding process, eliminating the need for secondary assembly. This reduces labor costs, shortens production times, and minimizes errors, leading to high-quality, reliable products at a lower overall cost.

Greater Design Flexibility

The versatility of insert molding allows for the creation of highly customized components. Manufacturers can tailor the shape, size, and materials of inserts to meet specific requirements, enabling the development of innovative products with unique features, such as electrical connectors, medical devices, or automotive parts.

Faster Time to Market

By streamlining production and integrating multiple components into a single step, insert molding reduces lead times and accelerates product development. This efficiency is critical for industries like consumer electronics and automotive, where rapid response to market changes is essential.

Reduced Assembly Time and Complexity

Insert molding minimizes assembly processes by integrating multiple components into a single part. This simplifies production, reduces opportunities for defects, and ensures consistent quality across production runs, meeting even the most stringent standards.

Improved Product Reliability

Integrating metal inserts into plastic parts enhances overall reliability, a critical factor in industries like automotive and aerospace where components face extreme stress. The combination of metal and plastic materials ensures strength, resilience, and consistent performance over time.

Complex Part Integration

Insert molding enables the production of complex parts by molding plastic around metal inserts. This process combines the advantages of both materials without requiring multiple parts or additional assembly steps. Manufacturers can create components with added functionality, such as threaded inserts, mounting features, or electrical pathways, enhancing value for end users.

Unlock Excellence in Insert Molding with XC Machining

At XC Machining, we excel in delivering high-quality insert molding solutions that combine durability, efficiency, and design innovation. Our expertise allows you to push the boundaries of manufacturing and product development.

Contact us today to learn how our insert molding services can transform your processes and bring your ideas to life!

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Bring Your Designs to Life with XC Machining

Experience precision engineering with XC Machining. From detailed prototypes to high-volume production, we’re here to turn your concepts into reality. Contact us today to discuss your project needs!

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Frequently Asked Questions

Insert Molding

  • What are the benefits of insert molding for product design?

    Insert molding offers several benefits, including reduced assembly time, improved part strength, and enhanced functionality by combining metal inserts with plastic components in a single mold. This method eliminates the need for additional assembly steps and ensures a more reliable, cost-effective manufacturing process, making it ideal for complex parts used in high-performance applications.

  • Which industries typically use insert molding?

    Insert molding is widely used in industries such as automotive, medical devices, electronics, and telecommunications. It’s especially useful in applications requiring parts that combine metal components with plastic features, like connectors, housings, and electrical components. XC Machining specializes in providing precise insert molding solutions that meet the exacting standards of these industries. 

  • How does insert molding improve manufacturing efficiency?

    Insert molding enhances manufacturing efficiency by combining multiple operations into one process. The inclusion of metal inserts during the molding cycle eliminates the need for secondary assembly steps, reducing production time and lowering labor costs. Additionally, the process ensures a consistent and durable bond between the metal and plastic, improving the overall quality and reliability of the finished product. 

  • What materials are used in insert molding?

    Insert molding commonly uses a combination of thermoplastic materials like ABS, polycarbonate, and nylon, along with metal inserts made from steel, aluminum, or brass. The specific choice of material depends on the application requirements, including factors like strength, conductivity, and resistance to wear and corrosion. 

  • What are the tolerance capabilities of insert molding?

    Insert molding typically achieves high precision with tolerances as tight as ±0.005 inches (±0.127 mm), depending on the complexity of the insert and molding material. At XC Machining, we use state-of-the-art equipment to ensure that all insert-molded parts meet the exact dimensional specifications required for demanding applications. 

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