Expert insert molding solutions for high-quality prototypes and on-demand production parts. From metal inserts to complex multi-material components, TOUWEI delivers precise insert molding services with competitive pricing and rapid turnaround times.
TUOWEI Precision specializes in precision insert molding solutions tailored to your project needs. Our insert molding eliminates the need for additional assembly by producing components in a single process, saving both time and reducing overall complexity. It also offers cost efficiency, as the removal of post-assembly steps lowers total production expenses. Parts manufactured through this method are lighter yet stronger than all-metal alternatives, delivering the ideal balance of weight reduction and durability. By integrating inserts directly, the process ensures reliable performance with improved strength, wear resistance, and long-lasting functionality throughout the product’s life.
Whether you need prototypes or high-volume production, TUOWEI delivers consistent quality with fast lead times. Upload your CAD files today for a free design review and custom quote.
Insert molding is an advanced injection molding process where plastic is molded directly around a pre-placed insert, such as metal, plastic, or even ceramic. These inserts—like threaded fasteners, pins, or electrical components—are positioned inside the mold cavity before molten plastic is injected. Once cooled, the result is a single, durable part with enhanced mechanical strength and functionality. For example, stainless steel or aluminum inserts improve tensile strength, conductivity, and wear resistance, making insert molding ideal for demanding applications in automotive, electronics, and medical industries.
We deliver rapid prototype tooling with fast turnaround to help validate designs, perform functional testing, and assess market potential. Using cost-effective aluminum tooling, TUOWEI produces small batches of plastic molded parts within days, reducing financial risks before scaling into full production.
For high-volume requirements, TUOWEI creates durable production molds built from premium tool steel capable of producing hundreds of thousands of consistent, high-quality parts. Each mold is tailored to your project specifications, ensuring strength, repeatability, and long-term reliability in demanding applications.
TUOWEI’s insert molding services are designed to produce parts that meet both functional and aesthetic requirements. By following standard design considerations, we guarantee superior results that enhance part performance and appearance.
| Insert Molding Service | Tolerance |
|---|---|
| Standard Insert Molding | ±0.005" (±0.127 mm) |
| High-Precision Insert Molding | ±0.002" (±0.051 mm) |
| Insert Molding with Metal Inserts | ±0.003" (±0.076 mm) |
| Mass Production Insert Molding | ±0.005" (±0.127 mm) |
For Insert Molding, these are the common surface finishing techniques used to enhance the quality and function of insert-molded components:
Polishing removes imperfections and burrs from the surface, providing a smooth, glossy finish on the molded parts.
Bead blasting creates a consistent matte surface finish that helps mask any mold lines or imperfections on quick-turn parts.
Texturing adds visual appeal and grip to the surface of the part, commonly used for quick-turn consumer goods with tactile requirements.
Spray coating applies a protective finish, ensuring the insert-molded part has enhanced durability and resistance to environmental factors.
Vibratory finishing is used to smooth rough edges and surfaces, ensuring quick-turn molded parts meet both aesthetic and functional standards.
Electroplating applies a thin metal coating, enhancing the part’s appearance, wear resistance, and corrosion protection.
Engineers and leading manufacturers trust TUOWEI for fast iterations and durable, high-performance parts. Whether for prototyping or full-scale production, our extensive material selection ensures precision, strength, and reliability for any CNC machining project.
ABS
Polycarbonate
Nylon, Acrylic, PVC
Polypropylene
PETG
POM (Acetal)
Polyamide (Nylon)
TPE
Silicone
EPDM
Buna-N
Neoprene
TPE
Urethane
Epoxy
Phenolic
Polyester Resin
Vinyl Ester
Aluminum
Steel
Stainless Steel
Zinc
Brass
Carbon Fiber
Glass Fiber Reinforced
SMC (Sheet Molding Compound)
BMC (Bulk Molding Compound)
Polyurethane
TPE (Thermoplastic Elastomer)
EPDM
Nitrile
Insert molding is a single-step process that integrates pre-formed inserts, often metal, into a plastic part, resulting in enhanced strength, durability, and reduced assembly requirements. Overmolding, on the other hand, is a two-step process where one material, commonly a thermoplastic elastomer (TPE)—is molded over a rigid substrate to create improved grip, comfort, and multi-texture functionality. While insert molding is best for structural integrity and cost efficiency, overmolding is ideal for improving aesthetics, usability, and product performance.
Advantages
Insert molding minimizes assembly steps, lowers production costs, improves structural strength, and supports complex multi-material integration.
Applications
Insert molding is widely used for prototypes and production parts across multiple industries, offering both functional and aesthetic benefits.
With Tuowei Precision’s CNC milling service, you’re not just investing in advanced machinery. You’re gaining the assurance of flawless precision, commitment to strict timelines, and the expertise of skilled professionals dedicated to meeting your needs.
Tuowei Precision’s ISO-certified CNC machining guarantees exceptional accuracy and quality. Every part is crafted for perfect fit and flawless performance, with rigorous quality control at each stage.
Stay on schedule with Tuowei Precision. Our state-of-the-art equipment and local workshops deliver rapid production to meet your tight deadlines.
Rely on our team for comprehensive CNC machining support. Our experts are available to optimize design efficiency and ensure top-quality results at every step.
From detailed prototypes to high-volume production runs, TUOWEI is your trusted partner for precision CNC machining. Reach out today and take the first step toward streamlined, high-quality manufacturing solutions.
Whether you’re creating a small batch of custom parts or scaling up for high-volume production, Tuowei Proto services offer the flexibility you need.
CNC rapid prototype machining is perfect for creating engineering or production prototypes that closely resemble the final product in both appearance and functionality. At Tuowei, we offer instant quotes and fast delivery, providing you with precise, high-quality CNC machined prototypes for your needs.
Low volume CNC machining often acts as a bridge between prototyping and mass production for new and emerging production. With Tuowei, this process becomes easier, more efficient, and cost-effective, allowing you to scale production quickly while maintaining high-quality standards.
CNC production machining is the best solution for producing a thousand parts or more efficiently. Leveraging a diverse selection of materials and automation and multi-axis capabilities, Tuowei delivers high-volume production with tight tolerances, superior dimensional accuracy, high reliability and fast turnaround times.
Stay ahead with expert tips, industry trends, and precision manufacturing insights from the team at Tuowei. Read our latest blogs to gain valuable knowledge and discover how we’re shaping the future of CNC production.
How does insert molding improve part durability?
Insert molding bonds metal or other inserts directly into the plastic, creating a stronger and more reliable structure. This process reduces the risk of loosening or failure during use. By combining materials into one unified part, it ensures long-term durability. It also enhances resistance to wear, stress, and impacts.
What design considerations are important for insert molding?
Proper insert placement, wall thickness, and material compatibility are critical for success in insert molding. Engineers carefully design molds to hold inserts securely in place during the process. Cooling systems must also be optimized to prevent defects or shrinkage. These considerations ensure high precision and consistent results.
Can insert molding be used for both prototypes and mass production?
Yes, insert molding is suitable for producing both prototypes and large-scale production runs, making it versatile for testing designs as well as manufacturing high-volume parts.
What industries use insert molding most often?
Insert molding is widely used in automotive, medical devices, aerospace, consumer electronics, and household goods due to its strength, precision, and design flexibility.
Engineering&Manufacturing
From Prototype to Production
