Custom Injection Molding Services
We provide plastic prototyping and mass-production plastic parts worldwide. Upload your 3D files now to get our factory-direct pricing.
- 15% cost optimization
- 45M parts & 600 molds annually
- 2 global facilities
First Mold's Injection Molding Capabilities
For over 15 years, we’ve helped companies move from rapid plastic prototyping to scalable on-demand production. At First Mold, every injection molding project begins with a thorough DFM review to identify and resolve potential defects before production.
Our one-stop injection molding service offering covers mold manufacturing, secondary part finishing, and full CMM inspection. Choose suitable processes according to your part requirements and technical drawings.
Base Material Capabilities
Multi-Material & Integrated Molding
Cost-Optimized Strategies
Our Injection Molding Specifications From Prototyping To Mass Production
Our prototyping molds are often made from pre-hardened steel and have a single cavity. Production molds are usually made from hardened steel, often have multiple cavities, and require much stricter quality checks.
| Specification | Prototyping | Small-Batch | Mass Production |
|---|---|---|---|
| Objective | Design verification (appearance, fit, function); Trade-show samples; Investor demos | Design is largely frozen but not yet final; Early sales, market testing, or clinical trials | Design is frozen and validated; Clear Market demand; Heavy tooling investment. |
| Recommended Volume | 100 – 10,000 parts | Roughly 1,000 – 100,000 parts | 10,000 – 1,000,000+ parts |
| Time to First Trial (T1) | 7 – 15 days | 3 – 5 weeks | 3 – 10 weeks |
| Mold Material | Aluminum alloys: 6061, 7075, QC-10; Pre-hardened steel: P20, NAK80 | Pre-hardened steel: P20, NAK80 | Hardened tool steels: H13, S136, DC53 |
| Mold Life | 1,000 – 50,000 shots | 100,000+ shots | 500,000 – 1,000,000+ shots |
| Mold Cavities | Single cavity | Mostly single cavity, some times 2 cavities | Multi-cavity is the norm: 4, 8, 16, 32, or 64. |
| Part Unit Cost | Highest unit price | Mid-range unit price | Lowest unit price |
| Design Complexity | Best for simpler geometry; Simplify wherever possible | Moderate complexity | Complex geometries supported |
| Quality Documentation | Basic documentation; First article inspection report (FAIR) | More complete documentation; FAIR; Simplified PPAP | 100% CMM, FAI, and full PPAP |
| Mold Ownership | Client owns 100% of the mold | Client owns 100% of the mold | Client owns 100% of the mold |
| Tooling Transferability | Fully transferable | Fully transferable | Fully transferable |
| Engineering Support | Basic DFM review | Deeper DFM + mold flow as needed. | 1-on-1 Co-engineering & advanced moldflow analysis |
Molding Solutions for Your Industry
Every industry demands strict compliance. We deliver our molding processes routinely meet IATF 16949 for automotive, ISO 13485 for medical, and UL 94 V-0 for electronics. Explore our typical part applications below.
| Part Type | Typical Parts | Our Focus |
|---|---|---|
| Housings & Enclosures | Device covers, control panels, electronic casings | Fit, finish, protection |
| Frames & Structural Parts | Internal frames, brackets, chassis | Strength, warp control |
| Gears & Moving Parts | Gears, impellers, cams, levers | Wear, tolerance, cycle life |
| Connectors & Fasteners | Terminal blocks, snap-fits, clips | Repeatable fit, assembly |
| Seals, Dampers & Grips | Waterproof gaskets, O-rings, overmolded grips | Sealing, comfort, durability |
| Optical & Clear Parts | Light guides, lenses, display windows | Clarity, light transmission |
Two Facilities, 60+ Injection Presses
With injection molding centers in both China and Mexico, First Mold offers unparalleled supply chain resilience, flexible capacity, and effective tariff mitigation for global buyers.
China Manufacturing Hub
Our China mega-facility is equipped with over 50 automated presses ranging from 90T to 1000T. It serves as our core engineering hub, focusing on complex tooling, low-cost scalable mass production, and strict-tolerance components for worldwide export.
1000T Press
Mexico Facility
Our Mexico facility features over a dozen advanced injection molding machines. We help US and Canadian buyers bypass transpacific shipping delays, eliminate high import tariffs, and ensure rapid ground delivery for production runs.
Why Partner With First Mold?
Solve issues before molding, not after
We use DFM to find and fix problems before tooling, with cost and timing estimates upfront. So your first trial run is production-ready, not a rework cycle.
Quality Reports on Request
Quality reports are available on request. We keep full process data for every batch, so we can show consistency across the entire batch—not just sample inspection results.
Industry Experience You Can Trust
With one technically skilled project lead who has decision authority, any change is handled by a single person without repeating across departments.
Our quality assurance measures include: ISO 9001 | ISO 13485 | IATF 16949 | NDA Control | 100% Material Traceability | RoHS | REACH | FAI reports and PPAP documentation | Zero-Defect Goal
4 Steps to Get Your Plastic Parts
We don’t treat your CAD files as a black box. At First Mold, our plastic injection molding process is completely transparen. Here is the exact step-by-step.
01
24-Hour Quote
Upload your files under a strict NDA. Receive a transparent price breakdown in under 24 hours.
02
Tooling & T1 in 7-15 Days
We machine your mold entirely in-house. T1 trial samples for validation in as fast as 7 days.
03
Mass Production & Real-Time QC
We launch full-scale production. CMM inspection routines for uncompromising consistency.
04
Finishing & Global Logistics
We complete all secondary finishing and assembly. Parts ship fast directly to your dock.
Tip: Prefer a visual walkthrough? See how our platform works in this 3-minute video: How to Get a Part Production Quote from First Mold.
Resources
DFM
Wall Thickness · Draft Angles · Risk Mitigation
Secondary Operations
SPI/VDI Textures · Custom Surface Finishing
Injection Molding Costs
Tooling Investment · Resin Pricing · Per-Part Breakdown
FAQ
How much does a custom plastic injection mold cost?
It depends entirely on part size, geometry, and how many parts you need the mold to produce. A simple rapid tool might cost a couple of thousand dollars, while a high-cavity, high-volume automotive mold can run into the tens of thousands. Send us your 3D file and you’ll get an accurate quote within 24 hours — no guesswork, no hidden fees.
What is your minimum order quantity (MOQ) for custom injection molding?
Typically, you’ll start to see real unit cost advantages at volumes over 500 pieces. But if you only need a few hundred for market testing, we can use a rapid tooling approach to keep your initial investment low. There’s no hard threshold — we work out the most cost-effective option for your specific situation.
Who owns the injection mold tooling after it is built?
You do. If you paid for the mold, the tooling is 100% yours. We’re happy to store and maintain it for free, but you can retrieve it at any time. This is clearly stated in our agreement, no fine-print tricks.
What progress reports will I receive during mold fabrication?
You won’t be left guessing. You’ll receive updates at four key milestones:
- Design complete: DFM and 3D mold design for your approval.
- Rough machining done: Photos showing the mold base taking shape.
- Before T0 trial: A confirmed T0 trial schedule.
- After T0 trial: Physical T0 samples shipped to you, plus dimensional reports and process parameters.
And throughout the build, just ask — our engineers can snap photos or shoot short videos for you on the spot.
How do you handle plastic part design changes (ECN) after tooling approval?
We know late changes are expensive, so we’ll assess the impact quickly once you raise an ECN. Minor tweaks — like adding a rib or reducing material — we often handle at cost or sometimes even free. For larger changes, we’ll review the steel modification plan and cost with you immediately, then execute fast so your launch isn’t delayed.
What happens if the injection mold wears out during mass production?
Any mold we build is covered by a free warranty against normal, non-misuse wear within its designed lifespan. During production, we monitor tool condition proactively, so we’ll alert you about preventive maintenance before an issue surfaces. If a problem does occur — even in the middle of the night — our repair team is on standby. You don’t need to chase us.
What ISO certifications do your injection molding facilities hold?
We hold ISO 9001 for quality management. For medical or automotive programs, we have the capability and systems aligned with ISO 13485 and IATF 16949. Certificates can be shared right away, and you’re welcome to audit us in person.
Can I transfer an existing injection mold to your facility for production?
Of course. We’ll start with a free mold condition assessment and provide a detailed trial report showing what needs maintenance or adjustment. Once the tool is verified, we can put it straight into production. We handle the entire transfer process — you just wait for good parts to arrive.
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