# **How to Choose LOON UV CLEAR FLY FINISH – THICK or THIN – Fly Tying UV Resin 1/2 oz**
When it comes to fly tying, the right UV resin can make all the difference in durability, clarity, and ease of use. **LOON UV CLEAR FLY FINISH** is a top choice among fly tyers, offering two viscosity options—**THICK** and **THIN**—each suited for different applications. If you’re wondering which one to choose for your fly-tying needs, this guide will help you make an informed decision.
## **Understanding LOON UV CLEAR FLY FINISH**
LOON Outdoors is a trusted brand in the fly-fishing industry, known for producing high-quality adhesives and fly-tying materials. Their **UV CLEAR FLY FINISH** is a 1/2 oz UV-activated resin that cures instantly under UV light, creating a tough, glossy, and waterproof finish. The key difference between the **THICK** and **THIN** versions lies in their viscosity, which determines how they flow and adhere to different fly patterns.
## **LOON UV CLEAR FLY FINISH – THICK**
### **Best Uses:**
– **Head Cement Replacement** – The thicker formula is ideal for creating durable heads on flies, such as bass bugs, streamers, and saltwater patterns.
– **Bubble-Free Coating** – Its high viscosity prevents dripping, making it perfect for building up layers on larger flies.
– **Structural Reinforcement** – Great for securing bulky materials like deer hair, foam, and synthetic fibers.
### **Pros:**
– Stays in place without running.
– Excellent for building a smooth, glossy finish.
– Works well for flies that require a thicker protective layer.
### **Cons:**
– May require a bit more effort to spread evenly on smaller flies.
– Not ideal for delicate applications where a thin, penetrating coat is needed.
## **LOON UV CLEAR FLY FINISH – THIN**
### **Best Uses:**
– **Delicate Fly Patterns** – Perfect for small nymphs, midges, and dry flies where a thin, even coating is essential.
– **Penetrating Coatings** – Seeps into thread wraps and fine materials for a seamless finish.
– **Quick, Even Application** – Flows smoothly, reducing the need for manual spreading.
### **Pros:**
– Self-leveling for a smooth, glass-like finish.
– Works well on intricate patterns with fine details.
– Cures quickly under UV light without leaving bubbles.
### **Cons:**
– May require multiple coats for a thicker build-up.
– Can run off if applied too heavily on vertical surfaces.
## **How to Choose Between THICK and THIN?**
1. **Consider Your Fly Patterns**
– If you tie **large, bulky flies** (streamers, poppers, saltwater flies), **THICK** is the better choice.
– If you work with **small, delicate flies** (nymphs, dry flies, emergers), **THIN** will provide a cleaner finish.
2. **Application Technique**
– **THICK** is better for controlled placement and layered builds.
– **THIN** is ideal for quick, even coverage with minimal effort.
3. **Desired Finish**
– **THICK** gives a more pronounced glossy look.
– **THIN** offers a subtler, natural sheen.
## **Final Thoughts**
Both **LOON UV CLEAR FLY FINISH – THICK and THIN** are excellent products, and many fly tyers keep both on hand for different applications. If you primarily tie larger, more durable flies, go with **THICK**. If you focus on small, intricate patterns, **THIN** will serve you better.
For the best results, always use a high-quality **UV curing light** (LOON’s own UV light is a great match) and apply the resin in thin layers to avoid overheating or incomplete curing.
By choosing the right viscosity for your needs, you’ll ensure your flies are not only visually appealing but also built to last through countless casts and strikes.
**Happy tying and tight lines!**
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