EP flies use synthetic fibers and other tying materials to create a convincing profile in the water. The same basic process can be adapted for different baitfish, insects, floating patterns, and sinking patterns by changing the hook, materials, proportions, and amount of resin.
Materials for Tying an EP Fly
Gather the materials before you begin. The exact selection depends on the pattern and the fish you intend to target, but a typical setup may include:
- A sharp, strong hook in a suitable size and shape
- Fly-tying thread, commonly selected according to the size of the fly and the strength required
- EP Fibers in one or more colors
- Dubbing for shaping the body or underbody
- Wire for reinforcement, segmentation, or a small amount of added weight
- Foam when buoyancy or a raised profile is needed
- Hackle, feathers, or other fibers for movement
- Optional wing-case materials such as foam or turkey quill
- Epoxy or UV resin for reinforcement and finishing
- A vise, scissors, bobbin, thread, and a UV light if using UV resin
Step 1: Select and Prepare the Hook
Choose a hook that suits the size of the fly and the fish you are pursuing. A smaller target may call for a finer hook, while a larger pattern needs a hook with enough strength for the expected pressure. Hook shape also influences the final silhouette. A wide-gap hook can be useful for some patterns, while a straight shank may better suit another design.
Place the hook securely in the vise with the shank level and easy to access. It should not wobble as you work, but avoid tightening the vise so much that the hook is damaged.
Create a Thread Base
Start the thread near the hook eye and wrap it toward the bend in smooth, close turns. A thread base gives the other materials something to grip and helps keep the body even. Use finer thread for delicate work and stronger or heavier thread when tying a larger, more durable fly.
Step 2: Build the Body and Underwing
Apply a small amount of dubbing to the thread and wrap it along the shank to establish the body. Keep the shape relatively even, adding material gradually rather than creating a bulky lump. The body should provide the foundation for the fibers and any additional layers.
If the pattern calls for wire, tie it in at one end and wrap it over the body. Keep each turn close to the previous one. Wire can reinforce the fly, add visual segmentation, and provide a small amount of weight.
Next, prepare a bundle of EP Fibers for the underwing. Align the fibers, measure them against the hook, and trim them so the length suits the profile you want. Secure the bundle with firm thread wraps. Avoid using more material than necessary; an overly dense bundle may reduce the fly’s movement and make the finished pattern harder to shape.
Step 3: Add the Wing Case or Top Profile
Foam is a useful option when you want buoyancy or a raised top profile. Cut a narrow strip, place it over the rear portion of the fly, and secure it without crushing the foam completely.
For a more textured appearance, a trimmed section of turkey quill can be used instead. Position it over the body and fasten it with controlled thread wraps. Other thin, durable materials may also work, provided they are light enough to avoid interfering with the fly’s movement.
Step 4: Add Wings, Tail, and Hackle
Choose materials that complement the intended prey and provide the amount of movement you want. Fine, translucent fibers can suggest wings, while stiffer fibers can form a tail and help establish the fly’s outline.
Attach the tail at the rear of the body, keeping both sides balanced. It should not be so long that it tangles with the hook. Add the wing material on top, securing it with several neat wraps rather than one excessively tight bind.
If the pattern uses hackle, tie it in and wrap it evenly around the shank. The fibers should remain mobile and should not form an unnecessarily thick collar. Trim stray fibers only after checking the overall proportions.
Step 5: Apply Epoxy or UV Resin
Resin protects the thread wraps and helps hold the finished materials in place. Epoxy gives you more working time but must be mixed thoroughly according to its instructions. UV resin can be shaped before curing and then hardened with a UV light.
Apply a thin coat with a fine applicator or toothpick. Cover the areas that need reinforcement without saturating the fibers. Too much resin can add unwanted weight and reduce the fly’s natural movement. Inspect the coating for bubbles, gaps, or excess material, then allow epoxy to set or cure the UV resin completely.
Step 6: Trim and Inspect the Finished Fly
Use sharp scissors to refine the silhouette. Trim uneven fibers and shape the body so it is balanced from side to side. The finished profile should be streamlined rather than bulky.
Check that the hook point is clear, the materials are firmly attached, and the fly has no sharp thread ends or loose fibers. Eyes or other small details can be added at this stage if the pattern requires them. Store the fly only after the resin and any head cement have fully set.
Tips for Better EP Flies
- Match the fly’s size and colors to the prey you are trying to imitate.
- Use sparse, well-aligned fiber bundles instead of adding excessive material.
- Keep thread wraps tight and orderly, especially where wings and tails are attached.
- Test the finished fly in water and adjust the profile if it twists or moves unevenly.
- Use resin sparingly so the fly remains durable without becoming heavy or stiff.