Semperfli Nano Silk 30 Denier 18/0 by Semperfli

Semperfli Nano Silk 30 Denier 18/0 is an ultra fine thread built for the smallest patterns where you want virtually no bulk. With no need for different colors, you can color the thread with a marker and finish with UV resin for a clean, durable fly. This nano thread excels on midges, dries, and small nymphs, delivering precise wraps with minimal protrusion, and it stays taut without fraying. You can split it down further or use it to tie dubbing loops, giving you flexible options for detailed bodies or stealth profiles. Recommended you use with a ceramic bobbin for consistent tension and smooth feeding. Length 100m spool, ready for extended tying sessions and repeatable color from marker customization.

Ultra fine 30 denier, 18/0 construction minimizes bulk on tiny patterns.
Color customization via marker, then UV resin coating cured with standard light.
Suitable for midges, dries, and small nymphs; supports dubbing loops and precise wraps.
Compatibility with a ceramic bobbin for smooth tension and control.
Length 100 meters on each spool.

Semperfli Nano Silk 30D 18/0

By Semperfli

$6.50

In stock. Ships immediately or available for in-store pickup.

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Nano Silk 18/0 for micropatterns

So Gel-Spun Polyethylene, or GSP, is a very high-strength, low-bulk thread, and at 18/0, it is literally the ultimate go-to thread for my micropatterns. Off the bobbin, this thread seems wispy and unmanageable, but on the bobbin, it's a pleasure to tie extremely tiny flies with. Unlike other floss-like threads, this gel-spun fiber requires a ceramic bobbin; otherwise, it tends to get hung up and fray. Spinning the thread clockwise will bind the fibers if you choose to do so. Creating low-bulk dubbing loops for size 20 flies and smaller is not a problem. I have found that Kapok fibers and this thread are an outstanding combination for dubbing tight micropatterns. Kapok mingles very well with this GSP thread. If you mix the Kapok (which acts as a binder for other dubbing mediums)with a tiny amount of natural hair fibers of your choice, you can scale most of your larger patterns down uniformly with great success. This works extremely well with tiny CDC emerger patterns, and Semperfli Nano Silk honestly makes this much more manageable.