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Overmolding
About Overmolding Service
Overmolding is an advanced injection molding technique that combines multiple materials into a single part, enhancing product functionality, durability, and aesthetics. It's widely used in electronics, medical devices, and consumer products.
High-End Appearance
Design Flexibility
Enhanced Durability
Improved Grip and Comfort
Streamlined Assembly
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Aluminum is a popular choice for machining due to its low density, good mechanical properties, high thermal and electrical conductivity, and resistance to corrosion. 


Aluminum 7075-T651

Aluminum 2024-T351


Aluminum Grades For CNC Machining:

Aluminum 6061-T651

Aluminum
Overmolding Materials

Brass C360

Brass

Brass is an alloying consisting of both copper and zinc. The gold materials is a weather- and corrosion- resistant metal, it's also an easy to machine material, so feedrates can remain high and coolant need is minimal.

Brass C272

Brass Grades For CNC Machining:

Brass C260

Titanium alloy – Ti6Al4V

Titanium Grade 2

Titanium

Titanium is an amazing material. It has high strength, is lightweight, is resistant to corrosion and chemicals, and can even maintain its strength when exposed to incredibly high temperatures.

Titanium Grades For CNC Machining:

Titanium Grade 1

Stainless Steel 303

Stainless Steel 304

Stainless Steel

Stainless steel is well-suited for a wide array of CNC machining projects, due to its excellent machinability and outstanding uniformity. It also has good workability and weldability to match your machining needs.

Stainless Steel Grades For CNC Machining:

Stainless Steel 15-5

Material Selection
We stock more than 30 engineering-grade plastic and metal materials that are suitable for various part applications and industries. Materials range from plastics like ABS, polycarbonate, nylon, and PEEK to aluminum, stainless steel, platinum, and copper.
Infinite Capacity
Liminate downtime spent waiting for parts and safeguard in-house machining with on-demand relief and infinite manufacturing capacity.
We are optimized for speed, flexibility, and superior quality no matter the volume of parts. Here's what sets us apart.  tolerances down to ±0.001 in. (0.020mm); and cost-efficient machined parts at higher volumes to lower piece-part price.
Advanced Capabilities
Domestic Production And Support
Work with a trusted manufacturer and eliminate the risk of sending parts overseas. You can also call or email us at any time and we'll help with ordering parts, design feedback, material recommendations, and answer any questions.
Iterate part designs quickly and accelerate product development with quick-turn parts. Our automated design analysis will help spot any difficult to machine features before your design is sent to the manufacturing floor and save you from costly reworks further down the product development cycle.
Fast And Reliable Delivery
Why Choose BERGEK For Custom CNC Overmolding?
Manufacturing Analysis and Fast Quotes
When you upload your 3D CAD file to request a quote, we'll analyze your part geometry to identify any features that may be difficult to machine such as tall, thin walls or holes that cannot be threaded.
Advantages Of Overmolding
Material Bonding Strength
Enables complex geometries and functional features to be molded in one shot, reducing the need for post-processing or assembly.
Functional Integration
Produces parts with uniform structure and excellent mechanical strength due to consistent material flow.
Stable quality assurance
Automated processing ensures reliable output with minimal defects across large production runs.
Eco-Friendly and Efficient
Less material waste and energy consumption compared to traditional multi-step molding methods.
Overmolding is a specialized injection molding process where a base component—typically made from one type of plastic—is covered with a layer of a different material, usually a softer or elastomeric polymer. This multi-material technique allows manufacturers to integrate functions such as grip, cushioning, sealing, or vibration resistance directly into the product. Overmolding is commonly applied in tools, medical devices, electronics, and consumer goods to improve usability, appearance, and performance.
What Is Overmolding?
How Sheet Metal Overmolding Works?
Data Conversion
CAD files and drawings are converted into machine code to prepare for precise cutting.
Forming and Shaping
Brakes, punches, and dies are used to create angular bends and detailed features.
Assembly and Finishing
Parts are welded, fitted with inserts, or finished based on specific requirements.
Material Cutting
Laser, waterjet, or plasma machines accurately remove sheet metal material.

Sheet Metal Overmolding Surface Finishes

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