OPGA as a very thorough and interesting article about Coyote Composite.


Learn more about this lower priced alternative to cabon fiber that is natural, lightweight, tough, less itch, and non-toxic.

To learn more about

Coyote Composite

"Alternatives to Carbon Fiber" originally sought after for more flexible and tougher laminations, it also became clear this was a material that reduces the skin irritation of carbon fiber and reduces the health risks associated with breathing carbon fiber dust. In this extensive course, we will cover the history of prosthetic and orthotic manufacturing, the materials used, the alternatives now available, and the how to of laminating AFOs, and more flexible and comfortable prosthetic sockets.

Watch the video and click the link for

more information.

Take the course and get CE Credits.



Click here to



A great alternative to itchy, expensive carbon fiber braid! Coyote Composite, made from basalt filament is a safe, tough material for composite sockets and AFOs. Also relatively easy to cut and finish compared to other materials.

A few years ago we made the switch to using basalt braid

(Coyote Composite) rather than carbon fiber for our laminations.


We did this for a more flexible tougher lamination, but ended up with other benefits as well. Mainly a safer material that doesn’t itch the way carbon does, and it costs less.


It does laminate almost exactly the same, but there are some subtle differences in saturation. We have a lot of tips and tricks to help ensure you can laminate easily and effectively with Coyote Composite, and we can save you money.



Now Is the time to provide a safer work environment and save money.




  •  Extremely durable
  •  Resistant to cracking
  •  Less itch than carbon
  •  Non-carcinogenic and non-toxic
  •  Strong and lightweight
  •  Finishes smooth, with superior resin saturation
  •  Unique dampening characteristics
  •  Less expensive

Composite on outside of lay-up

RESIN   Coyote Composite works with typical prosthetic resins and saturates much better than carbon.

SATURATION AND LAMINATING   Because of its superior saturation it’s important to prevent resin starvation. Lamination starvation will cause frayed edges.

FINISHING   Coyote Composite finishes easily except in cases of starved laminations. Use sharp tooling at slow speeds to finish. In some cases, you may need to wet-sand.

RELIEVING   Coyote Composite is heat- and flame-resistant and isn’t damaged by heating. It allows for LIMITED adjustment based on the type of resin used.

SAFETY   Because of the inert nature of basalt, it is not a carcinogen. Also, Coyote Composite is between 9 and 16 micrometers in diameter, which is too large to be an inhalant risk. Basalt also causes significantly less skin irritation.

Composite on inside of lay-up

Coyote Composite on outside of layup with a CD103 Air-Lock
Coyote Composite on inside of layup with a CD103 Air-Lock

Composite rope is

used in reinforcing

sockets or AFOs.


BRAID   Our proprietary braid was designed to be used in equivalent amounts to carbon. Coyote Composite is more flexible than carbon (we consider this to be an advantage), but if you need to match the rigidity of a carbon socket, use additional layers of stockinette and/or carbon tape.


ROPE   We use Coyote Composite rope as a reinforcement material in place of (or in conjunction with) carbon tape. This can be used for distal reinforcement or spot reinforcing in windowed sockets.


FABRIC   Coyote Composite fabric sheeting can be used for reinforcement layers of heavy duty sockets and/or AFOs. The material is thin and lightweight which allows for greater flexibility in adding the ideal amount of reinforcement.

Coyote Composite rope being used in reinforcing a socket

Billing Information

Recommended Codes


L5940   Addition, endoskeletal system, Below Knee, Ultra-Light material (Titanium, carbon fiber or equal),


L5950   Addition, endoskeletal system, Above Knee, Ultra-Light material (Titanium, carbon fiber or equal),


L7400   Addition to upper extremity prosthesis, below elbow / wrist disarticulation, ultra light material (Titanium, carbon fiber or equal)


L2755   Addition to lower extremity orthosis, high strength, light weight material, all hybrid lamination / prepreg composite, per segment, for custom fabricated orthosis only.


The listing of codes with our products should not be construed as a guarantee for coverage or payment.

Ultimate responsibility for the coding of services/products rests with the individual practitioner.

Would you would like to learn more about Coyote Composite and get CE credits for doing it?

Take our "Alternatives to Carbon Fiber" course at www.opqschool.com


Get access to new techniques and methods right from your office or home through our first-level educational programs available on-line. For more information go to www.opqschool.com

We typically use two layers of basalt, with basic nylon stockinette in different order depending on the finish, and carbon tape over the distal end.


Epoxy resin run full vacuum at 20 to 24 in/HG until everything is saturated and cured.


Very important to            follow resin manufacturers instructions for proper measurements and mixing


Use the roughest sanding cone to take the edge down to the trim lines.


Finish with Tycro wheel. If you want more do a wet sand with scotch bright.


Use medium scotch bright wheel, buff outside to inside, inside to outside, smoothing and rounding off edges.

When polishing and finishing slow speed may give better results.




Layups are effected by the type of resin used.

Modified Acrylic; thinner, easier to saturate, fast cure

Epoxy Resin; stronger, clearer, thicker, slower cure time

Epoxy works well for heavier and more active people.



Epoxy resin manufacturers typically recommend a heat bag.


Acrylic modified epoxy resin run full vacuum at  20 to 24 in/HG until everything is saturated. When done stringing and walking away turn vacuum down to 10 to 15 in/HG.


Tech Tips

– Vacuum & Resins with Coyote Composite

Tips on vacuum, resin and lay-up


Finishing Edge Using Coyote Composite

Coyote Composite edges finish smoother and tend to be less jagged than carbon fiber.



Use equal amounts of Coyote Composite in place of carbon fiber in your existing layups, or you can try one of Coyote Designs sample layups.

How you lay it up will also greatly change the strength weight and flexibility.


Brad Davis, CPA CTP - Coyote Design's Central Fabrication Asst. Mgr. tells how he likes to finish the edge of a prosthetic socket made out of Coyote Composite in this Tech Tips video.


Watch this video of Nick Edinger "World's Strongest Adaptive Athlete 2016" and see how tough Coyote Composite is and what other properties this power lifter found useful about Coyote Composite and Coyote Designs StabileFlex Socket Design.

For United States product sales please contact one of these distributors.

For international product sales please contact one of these distributors.

United Kingdom

Spain & Portugal



Australia & New Zealand




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for all countries not listed