UTC Vinyl Round Rib - Large
UTC Vinyl Round Rib - Large is a round vinyl material for ribbing and forming segmented fly bodies. The Large size suits larger constructions where a pronounced rounded profile is needed to mark each division of the body. Use it on nymphs and pupae, or for scud shellbacks and nymph wing cases. Its round cross-section creates a regular raised rib when successive wraps are spaced along the body. This is a structural body material for defining sections and contours, not a yarn intended to fill the entire abdomen by itself.
Construction and use
For a clean result, wind Round Rib in a controlled spiral over the prepared body and keep the gaps consistent. Do not flatten the material as it is wrapped, and avoid unnecessary changes in tension because uneven pressure can disturb the segmentation. When forming a scud shellback or nymph wing case, anchor the material securely at the tying point first, then shape and position it to match the intended outline.
- Profile: Round vinyl ribbing material.
- Large size: Suited to larger nymphs, pupae and related constructions.
- Uses: Ribbing, scud shellbacks, nymph wing cases and segmented abdomens.
- Handling: Keep tension and spacing consistent to preserve the raised, even segmentation.



