Injection Molding Services
Production-Grade Plastic Parts, Coordinated by A3D.
We coordinate custom molded parts through our qualified injection molding supplier network, with application-first guidance and final QA at our Phoenix headquarters.
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.
Capabilities Available Through A3D
Capabilities are available through A3D’s qualified injection molding supplier network.
Tooling Options Available Through Our Supplier Network
Tooling is produced and maintained by A3D’s qualified injection molding partners. Available options include:
- 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)
Tool fabrication and ownership are governed by the engagement terms between client and A3D, with no mold-making performed at A3D.
Molding Options Available Through Supplier Network
- Single- and multi-cavity molds
- Family molds for related parts
- Insert molding (brass, stainless, and threaded inserts) and
overmolding (rigid-over-rigid and elastomer-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?
Materials Available Through Our Supplier Network
Commodity & Engineering Resins
ABS
Acrylic (clear/PMMA)
HDPE
Nylon 6 (glass-filled)
Nylon 66
PC+ABS
Polycarbonate (transparent/PC)
Polypropylene (PP)
Ultem (PEI)
Additive & Colorants (by request)
UV
FR
Impact modifiers
Custom master batch
Quality & Compliance
AS9100 • ISO 9001:2015 • ITAR Registered
A3D is ISO 9001:2015 and AS9100 registered and ITAR registered. These certifications cover A3D’s additive manufacturing, assembly, finishing, and supplier sourcing activities. Injection-molded parts route through our Phoenix headquarters for final QA before shipment, and supplier qualification is governed by our QMS.
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
We coordinate a DFM review with our injection molding supplier to flag challenging features and align on achievable tolerances based on resin, geometry, wall thickness, and tool design.
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. Through our supplier network, A3D coordinates rapid soft steel tooling for prototypes and pilots, and hardened steel production tooling for high-volume programs.
Yes. Through our injection molding supplier network, overmolding and molded-in hardware are available, including threaded inserts, plastic or metal substrates, and elastomer grips or seals. Note: post-mold insert installation is also performed in-house at A3D.
Yes, PPAP (Levels 1-3), FAIR/AS9102, CPD/GR&R, CofC, and lot traceability are available.
We’re process-agnostic. A3D produces additive parts in-house, and coordinates CNC machining, injection molding, and urethane casting through our supplier network. If another process delivers better results for your application, we’ll guide you to the right path.
Available resins through our supplier network include ABS, acrylic (PMMA), HDPE, nylon 6 (glass-filled), nylon 66, PC+ABS, polycarbonate, polypropylene, and Ultem (PEI). Ask about custom compounds or additives.
All molded parts route through A3D Manufacturing headquarters in Phoenix, Arizona for final QA before
shipment.
No minimums. Through our supplier network, A3D coordinates from 1 to 1,000+ parts with consistent attention to detail.