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Insert Molding Services

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.

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.

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 Overmolding 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.

Insert Molding Tolerances

Molded Part DimensionsStandard Tolerance (mm)Tight Tolerance (mm)
Hole Diameter (non-critical)±0.100±0.025
Insert Location (to edge)±0.100±0.050
Insert Concentricity±0.050±0.025
Flatness of Insert Seating Area±0.050±0.025
Insert Positional Accuracy±0.050±0.020
Wall Thickness (nominal)±0.100±0.050
Shaft or Boss Diameter±0.100±0.050
Mold Parting Line Flash±0.050±0.025

Materials for Insert Molding

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)

Metal Inserts

6061, 7Brass (C360, C260), Stainless Steel (304, 316), Carbon Steel (1018, 1045), Aluminum (6061, 2024 – less common due to softness), Copper (C110) 075, 2024

Surface finishes for Insert Molding

Here are the effective surface finishes for insert molded parts, carefully selected to enhance durability, functionality, and visual appeal in multi-material assemblies.
As-Molded Finish
As-molded finish in insert molding. Direct-from-mold surface, no post-processing.
Textured Mold Finish (VDI or Mold-Tech)
Textured mold finish for insert molding. Creating unique haptic surfaces on plastics.
Matte Finish (SPI C1–C3)
A non-reflective surface created through medium-grit sanding of the mold. Often chosen for parts where minimal glare and a subtle look are desired.
Polished Finish (SPI A1–A3)
Polished A1-A3 finish for insert molding. High-gloss, smooth plastic components
Bead Blasting
Bead blasting for insert molding surface finish. Achieving a uniform matte texture on parts
Overmold Transition Blending
Overmold transition blending in insert molding. Seamless integration of materials

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.

Our Insert Molding Prototype Manufacturing 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.
With 3, 4, and 5-axis CNC machining services, we can produce complex prototypes and parts with precise tolerances. More than 60+ materials are available for you to choose from.

Provides injection molding for prototypes and custom parts, emphasizing expert support, competitive pricing, and faster production cycles.

Get reliable vacuum casting services for high-quality prototypes and production parts at competitive prices. XinCheng offers highly detailed casting parts with consistent quality.

Uses cutting, bending, and forming techniques to produce precision metal components suited for industrial, commercial, and manufacturing applications.

Get In Touch

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

If you’re looking to combine metal and plastic in a single part while ensuring durability, insert molding is ideal for your project.
Yes! You’ll save on labor costs since we combine everything into one molding process instead of requiring multiple assembly steps.
Insert molding will give you stronger parts than traditional assembly because we securely embed the metal within the plastic structure.
We can incorporate various electrical connectors and terminals into your plastic parts through our insert molding process.
We inspect every component using advanced techniques to ensure your parts meet exact specifications and quality standards.