Insert Molding Services

Q: 1. What’s the process for injection mold making?

Our mold-making process includes 6 steps: Step 1: Production arrangement: Determine all of the requirements and arrange the production. Step 2: DFM report analysis: Provide free but detailed production DFM report for further feasibility analysis. Step 3: Production the mold: Put the mold into production and provide the Tooling Schedule form for the whole cycle for clients to check the process at any time. Step 4: Free sample to test: Put the mold into production and provide the Tooling Schedule form for the whole cycle for clients to check the process at any time. Step 5: Mass production:Client confirms the samples are qualified, then officially proceed with the subsequent production. Step 6: Mold saving: Production is completed and delivered after quality inspection. Mold will be cleaned and properly stored for the next round of parts production.

Custom insert molding services for high-quality prototypes and on-demand parts. Get online quotes at a competitive price and short lead time.

30t-1800t

Molding Machine

12

Surface Finishes

0pc

MOQ

0.025mm

Tolerances

What's Insert Molding

Insert molding is an injection molding technique that involves injecting a plastic material around a plastic or metal insert placed in a mold cavity. The insert is pre-placed in the mold cavity, after which the plastic is injected. On cooling, this forms a solid part that is strong and durable. RapidDirect plastic insert molding services allow you to make a strong and permanent bond between the insert and molded plastic.

Eliminate assembly: Insert molded parts do not require assembly because there is only one manufacturing process.
Reduce costs: The removal of the assembly process reduces the cost of the insert molding process compared to the standard injection molding.
Reduced part size and weight: Insert molded parts that weigh less than all-metal parts.
Improve part strength: Incorporating plastic and metal inserts increases the durability and strength of the parts compared to other injection molding processes.

Quote Within One Day, Operate at Your Fingertips

RapidDirect provides a AI-powered, hassle-free online quotation platform that can help simplify your ordering and manufacturing process. Stop wasting time in emails, get interactive quotes with DFM analysis within seconds, optimize your orders immediately, compare your multiple quotes side by side, manage your orders in one place.

Bulk Pricing

Get in-bulk quotes, allowing you to make a pricing comparison between different specs, quantities, raw materials, and surface finishes, and helping you choose the solution that best suits your needs and budget.

Real-time Order Tracking

Our online platform enables real-time visibility of the production flow that fosters more efficient operation monitoring and quicker response to negative changes.

All-in-one Order Management

Quickly check, search, and manage all your orders in one place. What's even better is that you get visibility into all stages of the production process and every aspect of the manufacturing operation.

Insert Molding from Prototyping to Production

Rapid Tooling

Get easy design feedback and validation through superior quality prototype tooling. Create small batches of plastic molded parts with excellent injection molding prototypes. We excel at manufacturing prototype molds within days to ensure you perform functional tests and validate market interest.

Production Tooling

We create high-quality production molds for high-volume plastic parts production. With high-strength, durable tool steel material, our production tooling is suitable for producing hundreds of thousands of parts. We can vary materials and construction methods according to your unique requirements.

RapidDirect Insert Molding Capabilities

RapidDirect insert molding solutions manufacture parts with different functional and aesthetical needs. These guidelines will help improve part manufacturability, reduce lead time, and improve the part aesthetics. You can check the following standard design considerations:

Standards	Metric Units	Imperial Units
Maximum Part Size	800×1000×400mm	31.50×39.37×15.75in.
Minimum Part Size	2×2×2mm	0.08×0.08×0.08in.
Substrate Wall Thickness	From 0.5 to 3mm	From 0.20 to 0.12 in.
Tolerance	+/- 0.025 mm	+/- 0.00098 in.
Inserts	Inserts can be female and male. They both can improve a product’s appearance and utility.
Mold Validation	Provide T0, T1, T2 samples before mass production
Inspection and Certification Options	First Article Inspection, ISO 9001, ISO 13485
Lead Time	From mold making to sample delivery: 15-45 business days

Materials for Insert Molding

We provide a wide range of materials for thermoplastic and inserts that can help you make insert molded parts of different industrial applications. Below are the materials used in custom plastic insert molding and common examples.

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Tooling Materials
Plastic Materials
Additives & fibers
Inserts

Tooling Materials

Before the insert molding process starts low or high-volume production, a high-tolerance CNC machined tooling is needed. Most commonly used materials include:

Tool Steel: P20, H13, S7, NAK80, S136, S136H, 718, 718H, 738

Stainless Steel:

420, NAK80, S136, 316L, 316, 301, 303, 304

Aluminum: 6061, 5052, 7075

More Details>>

Plastic Materials

Plastic injection molding service comes with a wide range of materials with different properties, including impact strength, rigidity, thermal resistance, chemical resistance, etc.

ABS	Nylon (PA)	PC	PVC
PU	PMMA	PP	PEEK
PE	HDPE	PS	POM

More Details>>

Additives and Fibers

Standard plastic materials may not meet custom injection molding parts requirement. In this case, additives and fibers can be added to improve aesthetic and functional properties, providing additional features for your injection molded parts.

UV absorbers	Colorants
Flame retardants	Glass fibers
Plasticizers

More Details>>

Inserts

The introduction of inserts onto mold cores cast using the manual or automated process leads to the plasticization of plastic pellets after closing the mold halves. Ejection of the pieces from the mold takes place after the plastic’s hardening, followed by the encapsulation of the inserts in the parts.

Brass

Stainless Steel

Aluminum

More Details>>

Note: You can learn more from our eBook on plastic materials.

Surface Finishes of Insert Molding

Insert molding solutions do not end after cooling and ejection of parts. We also provide a range of surface finishing and post-processing options for the insert molded parts for functional and aesthetic purposes. Common surface finishing options available at RapidDirect for insert molded parts include:

Name

Description

Link

Glossy	A grade finishes are made using a diamond buffing process and yield shiny and glossy surfaces on injection molded parts.	Learn More>>
Semi-glossy	B grade finishes use grit sandpaper to produce parts with a slightly rougher finish than grade A parts. Custom molded plastic parts that undergo B grade finishing have a matte surface texture.	Learn More>>
Matte	C grade finishes use grit sanding stones to produce a rough, uneven surface. Injection plastic parts that undergo C grade finishing have a matte surface texture.	Learn More>>
Textured	D grade finishes use grit and dry glass beads or oxide to produce a very rough textured finish. Depending on the type of material used, products can have a satin or dull finish.	Learn More>>

Injection Molding Whitepaper

Understanding the injection molding process can help designers and engineers create parts that are optimized for manufacturing, which can reduce costs and improve quality. Our ebook offers practical guides and tips that will help you achieve outstanding and durable injection molded parts.

Download it Now

Insert Molding Applications

Plastic insert molding is applicable in making prototypes and full products in several industries. Key industrial applications of insert molding include:

Consumer Goods

The custom plastic insert molding is suitable for making consumers good due to its functional and aesthetic benefits.

Medical Devices

Ensure the plastic is biocompatible before you choose insert molding to make devices and products such as medical implants.

Aerospace and Automotive

Applicable in making handheld devices such as screwdrivers, scissors, dials, and knobs.

Communication Devices

Applicable in the aerospace and automotive industry due to the strength and durability of molded parts.

Gallery of Insert Molded Parts

Why Choose RapidDirect

RapidDirect aims to provide custom insert molding solutions to clients from design to production. With our experience and facilities, we deliver quality parts at a competitive price and short lead time.

See What Our Customers Say About Us

A customer’s words have a more substantial impact than a company’s claims – and see what our satisfied customers have said regarding how we fulfilled their requirements.

We have been working with RapidDirect for years. They have helped us overcome many mold design issues and have enabled us to meet our quality goals. Their quality systems are really up to par and the production parts have exceeded our expectations.

Keith Laurie

-Tooling Design Engineer

RapidDirect has been our molding partner for over 2 years. Since then, RapidDirect has regularly provided us with top-notch molded parts. In addition, RapidDirect has offered assembly services for various models of our multi-bit screwdrivers up until the final finished product. I am pleased to recommend RapidDirect to anyone looking for top-notch molded products.

Harri Rossi

– Engineer

The staff at RapidDirect has assisted us in turning our ideas into finished parts for several years now. The process from conception to manufacturing has been smooth, thanks to their knowledge, skills, and “can-do” attitude. This is one of our most fruitful business partnerships because of RapidDirect’s emphasis on customer satisfaction.

Jimmy Kowalski

– Lead Mechanical Engineer

RapidDirect has consistently proved to be a top supplier of injection molded parts for our company. They have constantly impressed us with their professionalism, fairness, and reasonable prices. We’ve hired RapidDirect to create molds for us, fix and adapt existing molds to suit our demands, and deliver items that consistently meet or surpass our strict specifications.

Marcel Ransom

– Designer

RapidDirect has been a wonderful and strategic partner for us right from the beginning. They listen to customers and respond with a high level of technical expertise in materials, part design, and process options. This has been and will continue to be a crucial component of our success.

Danny Smajic

– Director of Product Development

Play Video about insert molding vs overmolding

Overmolding vs Insert Molding

While there are various similarities between overmolding and insert molding, there are also certain differences you must note. Here’s a video to explain the vital differences between these valuable processes.

Our Insert Molding Service for Various Industries

RapidDirect works with leading manufacturers from different industries to support growing demands and streamline their supply chain. The digitalization of our custom injection molding services helps more and more manufacturers bring their idea to products.

Automotive

Learn More

Aerospace

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Consumer Goods

Learn More

Medical Devices

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Robotics

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Let's Start A New Project Today

Frequently Asked Questions

1. What’s the process for injection mold making?

Our mold-making process includes 6 steps:

Step 1: Production arrangement: Determine all of the requirements and arrange the production.

Step 2: DFM report analysis: Provide free but detailed production DFM report for further feasibility analysis.

Step 3: Production the mold: Put the mold into production and provide the Tooling Schedule form for the whole cycle for clients to check the process at any time.

Step 4: Free sample to test: Put the mold into production and provide the Tooling Schedule form for the whole cycle for clients to check the process at any time.

Step 5: Mass production:Client confirms the samples are qualified, then officially proceed with the subsequent production.

Step 6: Mold saving: Production is completed and delivered after quality inspection. Mold will be cleaned and properly stored for the next round of parts production.

2. What are the typical tolerances for injection molded parts?

Tolerance is very important, and if not correctly specified and controlled, assembling will fail. RapidDirect uses ISO 2068-c standard for injection molding tolerances unless tighter tolerance required.

3. What is the minimum order qty?

No minimum order quantity, but the oder pricing will be more competitive if qty is higher.

4. How long does it take to make molded parts?

After you place order, it takes about 35 days for mold designing and making, and more 3-5 days for molded parts production.

5. How much does your injection molding service cost?

Generally, we generate the quote after our platform must have considered several factors, including the size of the component, mold complexity, number of injection cavities, materials, post-processing needs, etc.

Explore Related Resources

Overmolding vs Insert Molding: Selecting the Better Manufacturing Process for Your Product

Gripping of tools used every day is now easy with the introduction of insert molding and overmolding. However, confusion tends to …

January 18, 2022

Injection Molding Tolerances: Optimize Them in Four Ways

Injection molding is the most common manufacturing process for making plastic products composed of multiple parts that must be assembled …

November 23, 2021

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Insert Molding Applications

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Aerospace and Automotive

Communication Devices

Gallery of Insert Molded Parts

Why Choose RapidDirect

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See What Our Customers Say About Us

Overmolding vs Insert Molding

Our Insert Molding Service for Various Industries

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Consumer Goods

Medical Devices

Robotics

Let's Start A New Project Today

Frequently Asked Questions

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