# **How to Choose UTC Ultra Thread 70 Denier | Fly Tying Materials, Tying Trout & Salmon Flies**
When it comes to fly tying, the right thread can make all the difference in creating durable, aesthetically pleasing flies. Among the top choices for anglers is **UTC Ultra Thread 70 Denier**, a high-performance thread designed for precision and strength. Whether you’re tying delicate trout flies or robust salmon patterns, selecting the right thread ensures your flies hold up under pressure.
In this guide, we’ll explore why **UTC Ultra Thread 70 Denier** stands out, how to choose the best option for your needs, and tips for maximizing its performance in fly tying.
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## **Why Choose UTC Ultra Thread 70 Denier?**
### **1. Strength & Durability**
UTC Ultra Thread is known for its **exceptional tensile strength**, making it ideal for securing materials like bucktail, feathers, and synthetic fibers. The **70-denier** variant offers a perfect balance—strong enough for medium-sized flies yet thin enough for intricate wraps.
### **2. Smooth & Tangle-Free Performance**
Unlike lower-quality threads, **UTC Ultra Thread** has a **waxed coating** that reduces friction, preventing fraying and tangles. This ensures smooth, consistent wraps, even when working with slippery materials.
### **3. Wide Color Selection**
With **over 50 colors** available, UTC Ultra Thread allows for precise color matching to imitate natural insects or create flashy attractor patterns. Popular choices for trout and salmon flies include **olive, black, rust, and fluorescent orange**.
### **4. Consistent Diameter**
The **70-denier** thickness is versatile—suitable for **nymphs, streamers, and dry flies**. Thicker than 140-denier (for heavy-duty flies) but finer than 40-denier (for ultra-delicate patterns), it’s a great all-around choice.
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## **How to Choose the Right UTC Ultra Thread for Your Flies**
### **1. Match the Thread to the Fly Size**
– **Small flies (midges, tiny nymphs):** Consider **40-denier** for minimal bulk.
– **Medium flies (mayflies, caddis, small streamers):** **70-denier** is ideal.
– **Large flies (salmon flies, bass streamers):** Opt for **140-denier** for extra strength.
### **2. Consider the Hook Material**
– **Lightwire hooks:** A finer thread (like 70-denier) prevents thread bulk from distorting the hook gap.
– **Heavy hooks (salmon/steelhead):** A thicker thread (140-denier) ensures a secure tie without breakage.
### **3. Select the Right Color**
– **Natural insect imitations:** Use **olive, brown, or tan** for mayflies and caddis.
– **Bright attractors:** **Red, orange, or fluorescent** threads add visibility.
– **Neutral base wraps:** **Black or white** works well for most patterns.
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## **Tips for Tying with UTC Ultra Thread 70 Denier**
✔ **Use Proper Tension** – Too much tension can cut delicate materials, while too little may result in loose wraps. Adjust your bobbin tension for smooth, even pressure.
✔ **Wax for Extra Grip** – If tying slippery materials (like EP fibers), a light wax coating helps the thread hold better.
✔ **Double Up When Needed** – For larger flies, you can double-wrap the thread for added strength without switching to a thicker denier.
✔ **Secure with a Half-Hitch or Whip Finish** – UTC Ultra Thread holds knots well, but always finish with a secure knot to prevent unraveling.
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## **Final Thoughts**
Whether you’re tying **trout nymphs, dry flies, or salmon streamers**, **UTC Ultra Thread 70 Denier** offers the perfect blend of strength, precision, and versatility. Its smooth handling and wide color selection make it a favorite among fly tyers.
For premium fly-tying materials, explore **KyleBooker’s selection of UTC threads** and elevate your fly patterns today!
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**Happy tying and tight lines!** 🎣
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