Custom manufacturing support for U.S. product teams Discuss Your Project  →

Injection Molding Services for Custom Parts

Molded plastic parts for prototypes and production, with clear engineering support and predictable delivery.

Certification + Compliance

ISO 9001:2015 | ISO 13485:2016 | AS9100D | ITAR Registered

5M+parts molded monthly
20K+teams supported
100+resin options

Innovative Teams We Support

NORTHWINDGlobexVERTEX DYNAMICSinitechHELIODYNESONARA

Injection Molding Processes

From first prototypes to on-demand production, our molding processes cover reliable, tight-tolerance parts at speed — and your prototype tool is a stepping stone toward production manufacturing.

Plastic Injection Molding

Liquid Silicone Rubber Molding

Insert Molding

Overmolding

The DEMOLABS team turned our tooling around in under two weeks and the first shots were usable straight away. That schedule saved our launch.
— DEMOLABS customer, engineering lead

Mold Tooling Options and Quality Reporting

Two ways to run a mold with us: quick prototype tooling for iteration, or on-demand production tooling with full quality documentation. Here is how they compare.

PrototypingOn-Demand Manufacturing
GoalValidate design fastRepeatable production supply
Best forDesign iterations, pilot buildsBridge and volume production
CavitiesSingle cavitySingle or multi-cavity
Tool lifeThousands of shotsHundreds of thousands of shots
Lead timeFrom 5 daysFrom 3 weeks
InspectionBasic dimensional reportCTQ inspections and documentation
Pricing modelLow up-front toolingAmortized tooling, lower piece price
Design changesFast retoolingEngineering change support
Production PRO Tip: Uniform wall thickness is the single cheapest way to avoid sink and warp — vary walls by no more than 10% where you can. Read more

Injection Molding Materials

A broad selection of thermoplastics and thermoset resins can be evaluated against strength, appearance, temperature, and compliance needs.

Thermoplastics

  • ABS
  • Polycarbonate (PC)
  • Nylon (PA6, PA66)
  • Polypropylene (PP)
  • POM / Acetal
  • PC/ABS blends
  • TPU / TPE elastomers
  • Glass-filled grades
  • PMMA (Acrylic)
  • HDPE / LDPE
  • PEEK
  • PEI (Ultem)

Thermosets & Silicones

  • Liquid Silicone Rubber (LSR)
  • Optical LSR
  • Medical-grade LSR
  • High-temp silicone grades

The Working Guide to Injection Molding

This guide covers tooling choices, resin selection, and the design details that have the biggest effect on part cost and delivery planning.

[contact-form-7 id="165" title="Guide Download"]

Why Choose Us for Custom Injection Molding?

Lead Times in Days

Prototype tooling ships first parts in days, not months, so design loops keep moving.

Manufacturability Feedback

Every uploaded model gets automated moldability analysis before you spend anything.

Transparent Pricing, No MOQ

Live pricing against quantity and lead time, with no minimum order quantity.

Deep Molding Expertise

Applications engineers on call from tool design through production ramp.

Try a Sample Quote

Advantages of Injection Molding

Injection molding is the workhorse of plastic production — here is where it earns that title.

Injection Molding Applications

Wherever plastic parts ship at volume, injection molding is often part of the production plan. Typical applications include:

Injection Molding FAQs

Timing depends on the part, tool complexity, material, and inspection plan. A design review is the best way to set an achievable first-part schedule.

Tooling ownership and access should be documented in the manufacturing agreement before production begins. Confirm the policy for your program with the project team.

Detail capability depends on resin flow, tool construction, part geometry, and finish. Specify critical dimensions and surface requirements during review.

Yes. Compare the required stiffness, impact behavior, temperature, appearance, compliance, and end-use environment before choosing a resin.

Additional Links and Resources

Design Essentials for Molding

Wall thickness, draft, ribs, and bosses — the rules that keep parts moldable.

Resin Selection Walkthrough

A decision framework for narrowing hundreds of resins to a shortlist.

Prototype vs. Production Tooling

When to invest in hardened tools and when speed wins.

Get an online quote and injection molding design analysis today.