Injection molding machinery

Custom Injection Molding in Seattle

Fast Service. Local Support. Flexible Volumes.

Seattle businesses—from manufacturing to tech startups—rely on dependable plastic parts. 

Tamarack Industries provides custom injection molding to companies throughout the greater Seattle area. Based in Yakima, WA, we’re close enough to deliver fast turnaround and personal service, without the long delays or uncertainty of offshore suppliers.

Tamarack employee working with injection molding

Our Injection Molding Process

  • Tell Us What You Need

    Share your drawings, CAD files, or prototype ideas. We’ll review and provide a detailed quote for tooling and production.

  • Design Review

    We evaluate your part for moldability and suggest refinements that improve strength, function, and cost-efficiency.

  • Sample Production

    We manufacture your mold and produce first-run samples (T-1). Once approved, we complete finishing work like texturing or polishing.

  • Full Production

    Your mold is tested, prepped, and run in our facility. After a final inspection, we move to full-scale production and ship directly to your Seattle location.

Let’s Get Started

Looking for a regional injection molding partner with reliable turnaround and responsive support? Tamarack Industries provides custom plastic parts that meet your needs—on time and with no minimum order requirement.

Why Work with Tamarack for Injection Molding in Portland?

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    Custom Plastic Injection Molding

    From prototypes to production runs, we create reliable, repeatable parts—whether you need a handful or thousands.

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    Full-Service Capabilities

    We provide more than molding, including:

    • Prototyping and design support
    • Mold design and validation
    • Secondary services such as trimming, assembly, and welding
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    Flexible Mold Sizes and Shot Capacity

    Our presses cover 25 to 500+ tons with shot sizes from 1 gram up to over 2,200 grams, allowing us to mold small precision components and larger industrial parts.

Check Out Our Reviews

Stephanie Moore
Meier's Wine Cellars, Cincinnati, OH

VINPAK

I love the boxes and inserts. Haven’t had a damaged order yet, and the wine arrives looking great. My customers love the packaging – looks professional.

Stef Vollmer
Truthteller Winery, Woodinville, WA

VINPAK

We greatly appreciate the reliability VinPak has given us. Knowing that our wines will arrive safely and look great when they get there is priceless. Thank you for everything you do for us.

Montebello Plastics
Montebello, CA

ROLL CRADLES

Tamarack provides the cradles used by our packaging system. They are efficient for packaging bottles securely, reducing waste, and improving delivery times. CradlePak has made our shipping process more efficient.

Alison Thompson
Prairie Berry Winery, Hill City, SD

VINPAK

The VinPak inserts are such a Godsend because they are reliable, convenient, and very cost effective. Not only do they allow us to ship wine without worry of damage, but they also present our brand in a very professional way.

Robbi Ebel
Gramercy Winery, Walla Walla, WA

VINPAK

I have used VinPak before and they do a great job. The finished package looks fantastic and represents our winery very well

Manhasset Specialty Co.
Yakima, WA

CUSTOM INJECTION MOLDING

Manhasset stands have supported music performers worldwide since 1935. Tamarack Industries provides the plastic components used in the stands, helping to continue the tradition for over 85 years.

Industries We Serve in Portland

  • Technology & Electronics

    Components for devices, housings, and accessories

  • Food & Beverage

    Plastic parts for packaging and food-handling equipment

  • Manufacturing and distribution machinery

    Industrial Manufacturing

    OEM and replacement parts for machinery

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    Outdoor & Recreation

    Durable components for performance gear and sporting good

  • Logistics & Packaging

    Core plugs, roll cradles, and protective shipping parts

Custom Injection Molding

How Much Does Injection Molding in Seattle Cost?

Your project cost depends on:

  • Order Size – Larger runs reduce per-unit costs
  • Complexity – More detailed parts require additional tooling and setup
  • Dimensions – Smaller parts run faster and cost less per unit
  • Material Selection – Options include ABS, nylon, HDPE, polypropylene, acetyl, and more

Request a quote for pricing specific to your part design and quantity.

Our Commitment to Sustainability

Our Commitment to Sustainability

Seattle businesses value eco-conscious practices—and so do we. Tamarack Industries:

  • Uses recycled resins whenever possible
  • Manufactures in the U.S. to cut down on overseas freight emissions
  • Designs durable, reusable parts that reduce waste

Frequently Asked Questions

Which plastics do you mold?

We work with ABS, nylon, HDPE, polypropylene, acetyl, and more—with recycled options available.

Do you take on small orders?

Do you serve just Seattle or the wider region?

How quickly can I expect parts?

Can you help refine my design before tooling?