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.


  • A new partner for Coex: Atlantic Dental Supply

    Our filaments are now available to a whole new world of users as we have partnered with Atlantic Dental Supply! We are so excited for this opportunity to supply our first-class, Made-in-the-USA filaments to their customers.  Thanks, Bethany and theRead More

  • Mystery Filament Flash Sale – July 12th thru July 15th!

    While.  Supplies.  Last. So hurry!! Nearly 25% Off Mystery Standard PLA and Mystery Standard ABS in 1.75mm and 2.85mm.  Regular price: $16.99/kg marked down to $12.99/kg. Nearly 30% Off Mystery ABS+ (Our **PRIME** MG94 Blend of ABS).  Regular price: $27.99/kg marked down toRead More

  • *NEW* Black Hytrel® Filament Now Available on Our Web Store!

    The wait is over!! At the Rapid + tct show in Detroit last month, DuPont Transportation & Advanced Polymers revealed the latest in their Hytrel® filament line: BLACK Hytrel®.  Their official press release can be seen here. We have allRead 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.