Run reliability and quality customer service


Focused on new capabilities and technology


Customized solutions to fit your business need

Need Spiral Coil Binding?

COEX COIL manufactures high-quality spiral coils and coil filament. Contact us to place an order today.

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 Working with COEX LLC – Everything You Need in a Product and Partner

COEX 3D is dedicated to manufacturing the highest quality 3D printing materials in the industry. We are located in the heart of the Midwest in Appleton, WI, USA. We adhere to strict quality standards, ensuring optimal performance and premium resolution of all our 3D printing materials. Our advanced extrusion equipment and laser micrometers ensure quality and consistency of our 3D printer filament. We use only prime virgin resins, colorants and processing additives to ensure our customers can rely on COEX 3D filament.

COEX 3D recognizes that 3D printing innovation is constant. That’s why we take great pride in advancing 3D printer material technology through polymer science research and innovation. Our team can accommodate custom projects and work directly with customers on troubleshooting and new product development.

Plastic coil binding is a popular and inexpensive way to create beautifully finished products. At COEX COIL, we manufacture filament and plastic spiral binding coils in-house, offering 45 different colors and a variety of sizes. Our spiral binding material is flexible, durable and one of the most popular ways to bind documents.

Whether you’re looking to place a plastic coil order or would like to purchase coil filament for your own bindery, we have the plastic coil product to meet your needs.


  • 92-Hour Customer Testimonial

    Thank you, Acme Design, Inc. for sharing this incredible project with us. What you’re looking at: “The part is called a Gridfin and it is part of the SpaceX rockets that are currently being launched. This part is responsible forRead More

  • FINALLY… Coex is all PC

    No, not politically correct, folks.  (If you knew our team, you’d know that that’s virtually impossible.) And  yes, POLYCARB! Introducing… Coex Polycarb filament in Natural, White, and Black! Why print with Polycarb (PC)?  Because it’s… heat resistant up to 135 °CRead More

  • SPOOKY Sale – This Weekend!!

    EEEEEeeek!!! ???????? It’s a SPOOKY SALE coming your way. 3 Halloween inspired colors ON SALE for 4 days only! << Starting TOMORROW October 11th >> We’re talking savings on: ????Pumpkin Orange PLA ????Gamer Green PLA ????Plum Purple PLA Score these selectRead More

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"From sales to shipment, we love working with the COEX team!  Not only do they produce consistent, high-quality filament, their team is super flexible and willing to take on all of our requests." — Matt F.