Injection Molding Services
Get reliable custom molded parts without the platform runaround – application-first guidance, certified quality, and a supply chain you can trust.
Is Injection Molding Right for Your Part?
How Injection Molding Works
Injection molding uses a heated barrel and precision tooling to
inject molten resin into a mold cavity. Because parts are
formed in‑tool, you get repeatable geometry, great surface
finish options, and production economics for larger volumes.
What is Injection Molding Ideal For?
- Full production runs where part-to-part repeatability and unit
economics matter most - Bridge to production after prototyping when you need real
materials and consistent features - Insert and overmolded components, combining plastics with
metals or multiple resins - Tight-tolerance features that benefit from stable tooling and
robust process control - Programs that require documentation such as FAIR/AS9102,
PPAP, CPK, CofC, and material certifications
At a Glance: Advantages vs. Other Processes
When you need custom, production-grade plastics at scale, injection
molding delivers the best unit economics, repeatability, and
cosmetics – especially if you need hundreds to millions of parts.
When injection molding wins:
- Lowest Per-Part Cost at Volume: Short cycle times and multi
cavity (or family molds) drive costs down as volumes rise. - Repeatability & Quality: Stable process windows and
documented controls (FAI/PPAP/CpK as required) enable
consistent parts across long runs. - Production Materials & Cosmetics: Broad resin selection (such
as ABS, PC, PP, Ultem, and more) with textures or polishes
applied in-tool for consumer-facing surfaces. - Design for Manufacture (DFM): Thin walls, living hinges, snaps,
ribs, bosses, and features that benefit from precision tooling. - Scalability: Bridge-to-production paths (think: proto tool →
hardened steel), multi-cavity expansion, and automation as
demand grows.
At A3D Manufacturing, our recommendations are application‑first
and process‑agnostic. We’ll point you to injection molding, additive,
CNC, or a hybrid route based on what actually performs.
Our Capabilities & Technical Specifications
Tooling Options
- Rapid soft steel tooling for prototypes and low volumes
- Bridge tooling for pilot runs and pre-production
- Full-production hardened steel tooling (such as P20/H13
and more) - Hot runner or cold runner, slides, lifters, unscrewing cores,
and conformal-cooled inserts (as needed)
Molding Options
- Single- and multi-cavity molds
- Family molds for related parts
- Insert molding (brass, stainless, and threaded inserts) and
overmolding (rigid-over-rigid and alastomer-over-rigid) - Texture, polish, SPI, and Mold-Tech finishes
- Configurable part making via mold inserts
- In-process and first-article inspections
- Cleanroom packing on request
- Gauge R&R and capabilities studies available
Finishes & Textures
- Mold texturing per SPI/VDI/Mold-Tech
- Matte or high-gloss
- Post-mold ops such as gate and flash trimming
Have a specific finish in mind? Request information with
your quote.
Materials We Offer
Commodity & Engineering Resins
ABS
Acrylic (clear/PMMA)
HDPE
Nylon 6 (glass-filled)
Nylon 66
PC+ABS
Polycarbonate (transparent/PC)
Polypropylen (PP)
Ultem (PEI)
Additive & Colorants (by request)
UV
FR
Impact modifiers
Custom master batch
Quality & Compliance
AS9100 • ISO 9001:2015 • ITAR Registered
We apply rigorous certification standards to every project, ensuring you receive the highest quality products on time, everytime. You can expect your parts to route through A3D headquarters in Phoenix, Arizona, for final QA – no blind dropshipping – so you get predictable outcomes with documentation when needed.
Why this matters to you
- Engineers: tighter control, fewer surprises, faster validation
- Startups: scalable production without new vendor risk
- Supply Chain: traceability, documentation, and consistent delivery from a single accountable partner
Common Injection Molding FAQs
Tolerances depend on resin, geometry, wall thickness, and tool design. We’ll flag challenging features and
provide feedback during DFM review to align on achievable tolerances.
It’s about 4 weeks to the first shots for standard projects. Timelines vary depending on the tool complexity,
part size, and quality inspection plan.
Yes, rapid soft steel tools for prototypes and pilots, plus hardened steel production tooling for high-volume
programs.
Yes. Common examples include threaded inserts, custom plastic or metal substrates, and elastomer grips or
sealsYes. Common examples include threaded inserts, custom plastic or metal substrates, and elastomer grips or
seals.
Yes, PPAP (Levels 1-3), FAIR/AS9102, CPD/GR&R, CofC, and lot traceability are available.
We’re process-agnostic. If CNC machining, urethane casting, or additive manufacturing delivers better results,
we’ll recommend that path and can produce those parts, too.
We offer ABS, acrylic (clear/PMMA), HDPE, nylon 6 (glass-filled), nylon 66, PC+ABS, polycarbonate
(transparent), polypropylene (PP), and Ultem (PEI).
Ask us about custom compounds or additives.
All molded parts route through A3D Manufacturing headquarters in Phoenix, Arizona for final QA before
shipment.
No minimums. You can scale from 1 to 1,000+ parts with the same attention to detail.