Calculating Injection Molding Costs: Tips and Facts You Need to Know
Injection molding is one of the most popular manufacturing processes alongside CNC machining and 3D printing. However, it is notorious …
Custom injection molding services for plastic prototypes and on-demand production parts. Get a free injection molding quotation and design feedback within hours.
Molding Machine
Surface Finishes
MOQ
Tolerances
With our experience and advanced machinery, we excel at designing and manufacturing a series of plastic injection molds adjusted to your tolerance and cost.
Our plastic injection molding process uses precise machinery to shoot molten resin into a mold to become a final production-grade thermoplastic part.
Covering plastic, metal, and rubber over each other via chemical bonding, our overmolding reduces assembly time and gives our parts greater strength and flexibility.
Insert molding is the process of molding thermoplastic material around a preformed component to create a finished part that incorporates multiple materials.
Request your quote from our instant quote platform and our dedicated engineers will provide a response within 24 hours, ensuring the process goes on smoothly.
To ensure we can produce functional molds, we offer feasibility reviews of your design to ensure we can fulfill requirements before starting production.
Predictive modeling software helps us look at the way molten material moves and acts within the mold, which helps us deliver improvements.
Using your preferred materials enables us to make mold tooling that is of high quality and can readily fit your applications.
T1 sampling will be delivered for you to review prior to manufacturing plastic parts to ensure precision and quality.
After the trial production phase, we begin batch production, which uses powerful machining to manufacture parts at fast rates to save on time and costs.
We follow international tolerance standards to ensure our parts meet your parameters.
As our team handles packaging to secure our parts neatly for transport, we partner with logistics companies to schedule a timely delivery to your region.
Get in-bulk injection molding quotes, allowing you to make a pricing comparison between different specs, quantities, raw material, and surface finishes, and helping you choose the solution that best suits your needs and budget.
Our online injection molding platform enables real-time visibility of the production flow that fosters more efficient operation monitoring and quicker response to negative changes.
Quickly check, search, and manage all your injection molding 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.
| Standards | Description |
| Maximum Part Size | 1200×1000×500 mm
47.2×39.4×19.7 in. |
| Minimum Part Size | 1×1×1 mm
0.039×0.039×0.039 in. |
| Part to Part Repeatability | +/- 0.1 mm
+/- 0.0039 in. |
| Mold Cavity Tolerances | +/- 0.05 mm
+/- 0.002 in. |
| Available Mold Types | Steel and aluminum tooling. Production grade we provide: Under 1000 cycles, under 5000 cycles, under 30,000 cycles, and over 100,000 cycles |
| Machines Available | Single cavity, multi-cavity, and family molds,
50 to 500 press tonnage |
| Secondary Operations | Mold texturing, pad printing, laser engraving, threaded inserts and basic assembly. |
| Inspection and Certification Options | First Article Inspection, ISO 9001, ISO 13485 |
| Lead Time | 15 business days or less for most orders,
24/7 quotation response |
At RapidDirect, we design and create precise custom injection molds from high-quality materials. Our processes ensure unmatched consistency and repeatability at fast lead times and affordable pricing. Every plastic injection molding we fabricate meets international standards. From one-off projects to small batches and production tooling, we provide durable and reliable mold tools.
|
Mold Class |
Purpose |
Shot Life |
Tolerance |
Cost |
Lead Time |
|
Class 105 |
Prototype Testing |
Under 500 cycles |
± 0.02mm |
$ |
7-10 days |
|
Class 104 |
Low-volume Production |
Under 100.000 cycles |
± 0.02mm |
$$$ |
10-15 days |
|
Class 103 |
Low-volume Production |
Under 500.000 cycles | ± 0.02mm |
$$$$ |
10-15 days |
|
Class 102 |
Medium-volume Production | Medium to high production | ± 0.02mm |
$$$$$ |
10-15 days |
|
Class 101 |
High-volume Production | Over 1,000,000 cycles | ± 0.02mm |
$$$$$$ |
10-18 days |
Before injection 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
Plastic injection molding service comes with a wide range of materials with different properties, including impact strength, rigidity, thermal resistance, chemical resistance, etc.
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 |
Note: You can learn more from our eBook on plastic materials.
Injection molding includes injection mold tooling, plastic injection molding, and more. The surface treatment of the mold is usually completed during the production process. After the injection molding is completed, we will carry out certain surface treatments on the finished product as per your requirement.
| 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. | |
 |
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. |
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. We implement affordable aluminum tooling to help you reduce financial risks before full-scale production.
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.
Dive into RapidDirect’s extensive gallery that showcases some of our completed injection molded parts and take confidence that we can create your injection molding project according to your strict specifications.
No minimum order requirement helps move plastic molded parts from design to production in a fast turnaround and supports your on-demand molding manufacturing needs with reduced injection molding cost.
With certified domestic factories and a strong supply chain system, we accelerate the product development cycle and bridge the production of your injection molded parts as fast as possible.
Owing certified factories, conducting in-process inspections and dimensional verification after production, guarantee the custom molded parts are consistent in quality regardless of the complex shape with high precision.
Working with our experts having 10+ years of experience in the injection molding industry, efficiently complete a turnaround from prototyping to production.
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
Learn what you need before requesting for quotes for your injection molding projects at RapidDirect. Help you get wonderful molded parts made effectively, easily.
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