It’s often used for spinning deer hair and working with synthetic materials due to its strength and ability to lay flat. GSP thread is manufactured by extruding thin plastic, cooling it, and then twisting it together.
Key Characteristics of RFF GSP Thread:
- Strength:
GSP thread is remarkably strong for its size, often described as being 10 times stronger than steel of the same diameter and many times stronger than standard fly tying thread.
- Minimal Stretch:
It has very little stretch, around 3%, making it ideal for applications where a strong, non-stretching thread is needed.
- Flat Lay:
GSP thread lays flat on the hook, which is a desirable quality for many fly-tying techniques. This also means that the thread is very easy to split, allowing to CDC collars etc.
- Slick Texture:
It has a slippery texture, which can be helpful for spinning materials like deer hair.
50 Denier thickness (great for smaller patterns and dry flies)
- Spinning Deer Hair:
The strength and slick texture of GSP thread make it a popular choice for spinning deer hair patterns. Just be careful the thread can cut deer hair or similar stiff hairs if to much pressure is applied.
- Synthetic Materials:
It’s well-suited for working with synthetic materials that require a strong, yet small-diameter thread.
- Smaller Flies:
GSP thread can be used for tying smaller flies, such as nymphs and buzzers, as it doesn’t add a lot of bulk.
- Slippery Texture:
The slick texture can make it harder to grip and hold materials, particularly for beginners.
- No Stretch:
The lack of stretch can make it harder to feel the tension when tying, requiring a more watchful approach.
- Potential to Cut:Because of its strength, GSP thread can potentially cut through materials like foam if too much tension is applied.