Fly Tying

Gel Spun thread is renowned for its almost impossible-to-dye nature due to its molecular structure. The pigment fails to permeate the thread’s entire structure, binding to only its surface. Certain pigments exhibit greater stability. We also manage to come up with some important and often used colors by fly tiers:

Sumo 50DEN in Hot Fluo Orange, Yellow Mayfly and Tan Brown.

Here are some suggestions for working with Gel Spun threads:

• When changing bobbins frequently, avoid leaving any thread attached to the bobbin. A broken thread left behind could clog the entire spool, rendering it unusable. The simplest solution is to unroll 50-100 cm of thread, ensure it’s intact, and carefully guide it through the bobbin’s tube.
• Another solution is to not take out the thread from the bobbin holder until you finish the thread
• Ensure you’re employing a high-quality bobbin holder with a tube. While Gel Spun thread doesn’t harm the tube, a ceramic bobbin holder isn’t required. If the tube is metallic, it’s crucial that it doesn’t contain fine metal particles that could sever the thread. Contrary to popular belief, Gel Spun thread doesn’t damage tubes. In fact, this thread is quite soft. Aramid and Kevlar threads are responsible for destroying tubes, as they are abrasive, like sandpaper.

Here are a few photos about how these colors look on the hook shanks. It is about Sumo Power Thread in 50DEN in 100m/spool:

In all 3 photos are 2 overlapping layers of thread. Below is a picture of a single layer:

You can easily see the structure of the thread and how it sits on the hook shank. It can be used as a regular thread. I prefer the yellow one and the tan-brown one. They are relatively neutral colors that match any dubbing. In addition, they can be colored with a permanent marker. For small flies it can also be used as body thread which is fantastic.
For a superior grip, especially when fixing the feathers, a little wax should be used, it helps a lot, especially the beginners.
The breaking strength varies depending on the color from 1kg to 1.5kg force. What makes it an extremely resistant thread. With it you can break almost any hook in #10.

For streamers and large flies, an excellent thread is Sumo in 100DEN. It is very thin for how strong it is. The breaking force is 4kg. The advantage of this thread is that it does not load the hook. The disadvantage is that it is very silky. But with a little wax, the thread will give you an excellent grip.

Here is a small breaking test with different hooks: