UTC Ultra Thread 70
UTC Thread 70 is a fine fly-tying thread for small patterns and for applications where a larger fly must be built with low thread bulk. The product description identifies it as an ideal choice for dry flies, nymphs and midges tied on size 14 hooks or smaller. Its purpose is precise material control rather than creating a heavy underbody, making it useful for slim bodies, restrained thoraxes and neat finishing points. The thread is available in 32 colours, allowing the tier to coordinate the foundation or head with the pattern. Size 70 is a product designation; it should be selected for the level of bulk and control required, not treated as a direct measurement of diameter or breaking strength.
Construction and use
Use short sections and moderate, consistent bobbin tension when tying small flies. Keep the wraps close and orderly to preserve the intended proportions, then check that fragile materials are held securely before forming the final head or whip finish.
- Type: fine fly-tying thread
- Size: 70
- Suitable for: dry flies, nymphs and midges
- Design focus: small patterns and low bulk on larger flies