Thread sizes are usually labeled with an archaic system left over from the days when silk thread was measured in zeros. The more zeros, the thinner the thread. Three basic types of threads dominate the fly tying market. Nylon, Polyester and Kevlar are the most used yarns at the current levels.
Silk or newer gel spun polyethylene (GSP) are also available if one looks hard enough. Nylon and polyester are cheap, thin and sturdy, making them ideal for levels. Nylon threads compared to polyester have more elasticity, which makes it easier to work with them. Kevlar yarns are super strong with very little stretch.
While Kevlar can be a bit of a bear to work with, it has its uses when it comes to large flies, synthetic materials or spinning hair. Phecda Sport silk tying thread comes with 16 spools. The silk thread for tying is what some of the original levels of flies used. Since then, stronger materials have come out that are also cheaper, such as polyester.
However, silk can still be a good fly tying thread. It comes with 10 different colors that you can use for your tethering station, allowing you to use the color you want in your selection. Most fly tying threads are made of nylon or polyester. Polyester is slightly heavier than nylon and has a higher denier for a length of the same diameter.
Polyester is also a little stronger. There are also yarns made from other materials such as gel spun polyethylene (GSP), Kevlar, silk and monofilament, but they are for very specific uses, most general-purpose yarns are nylon or polyester. Although you can find threads that come in different materials, the most popular ones are nylon, polyester and kevlar. Of these three, polyester and nylon are the cheapest but toughest types, even though nylon stretches more than polyester Kevlar is the strongest of all, therefore it has a little stretch, which can be difficult to handle.
Nylon has about 25% elasticity, polyester about 15% stretch and spun gel only 3% stretch Really interesting information about the wonderful ranges of tie-down materials for home tying. Detailed explanations of the uses and tensions at break are remarkable. Just think that just a few decades ago there was only thread, cotton, nylon or silk that was available. You have to feel very comfortable tying flies and using resistant materials to get a good fly.
I only use the larger UTC yarns, 210 and 280 denier, on flies that require fast and heavy thread coverage such as the Pigsticker, or for the Cliff Watts hot head in Kilowatts. If you prefer to tie large flies such as streamers during your fly fishing expedition, this is a highly recommended thread. They are laid flat or laced at the whim of the level, they have a surprisingly good resistance and the colors are more than suitable for all the ties I make. Whatever brand of yarn the store carries is the one used by the levels, often assuming that this brand is quite suitable for the type of fly that is tied.
It's one of my favorite threads for flies like Crazy Charlies, as the round shape bites the top of the D-rib and the hard calf tail wing for a more secure hold. Many levels of flies don't skimp when it comes to buying fly tying materials, such as hackles or fly-tying dubbing, but they never think about the thread they will use. Most of their flies make their homes in fly tents in the northern Midwest, but some have found their way to Europe. It would be better to note that this thread does not come waxed, which could make using the thread for tying a bit difficult due to breakage.
Fly tying thread is easily the most important aspect to consider when it comes to fly tying material. In addition, if you like to use mosquitoes or any other small or small dry fly that connects around streams backwaters, you will find this fly tying thread quite useful. .