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.


  • 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

  • COEX meets Dremel 💕

    So, you are unable to use COEX’s filament because the spools won’t fit on your machine?  We have found a solution for you, if  you have a Dremel 3D40 or 3D45.  Thanks to countspatula on thingiverse! Also, thanks goes outRead More

  • New *RED* in Our PETG Filament Line

    The Coex team is excited to announce that we are expanding our PETG filament line with MORE COLORS! Our latest color of PETG filament is Scarlet Red (printed vase on the left).  It’s a richer, more cherry-red color than ourRead More

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See Our 3D Filament in Action

Check out our 3D printer filament in use in our in-house 3D printer.

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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.