Semperfli Classic Waxed Thread – 6/0 Bulk Spool
Using similar techniques as with Nano Silk, we extruded thin polyester strands which were then slightly twisted and had a light amount of wax added to them. The amount of wax added has been specifically applied after consultations with top professional fly tyers.
The lightly twisted strands allow the thread to lay flat and split easily compared to other threads on the market. After reviewing market offerings, we have also added 8/0 to the range and included fluorescent colors alongside traditional colors.
| Specification | Details |
|---|---|
| Thread Size | 6/0 |
| Length | 240 yd |
| Material | Polyester with wax coating |
| Available Colors | Traditional and fluorescent |
FAQ
What makes this thread different from other fly tying threads?
The thread is made from thin polyester strands that are slightly twisted and lightly waxed, allowing it to lay flat and split easily. This formulation was developed in consultation with professional fly tyers.
Is the wax coating visible or does it affect the thread’s strength?
The wax coating is minimal and not visible to the naked eye. It enhances the thread’s ability to split and lay flat without compromising strength.
Can this thread be used for both dry and wet fly tying?
Yes, the polyester base with light wax makes it suitable for both dry and wet fly tying applications.



Ryan North –
The thread lays flat and splits cleanly, which is exactly what I needed for detailed fly tying. The 6/0 size is perfect for fine work and the wax helps with consistency during tying.
Ian Wilson –
I’ve tried several threads before, and this one stands out for its smooth split and durability. The fluorescent colors are useful for testing and visibility during tying.
Steven James –
Good quality and consistent performance. A bit more expensive than some alternatives, but the ease of use and reliability justify the price.
Steven Edmunds –
The 240-yard spool is generous for bulk work. I use it regularly for both dry and wet flies and appreciate the even texture and minimal fraying.