Semperfli Classic Waxed Thread 12/0
Classic Waxed Thread 12/0 110m (120 Yards) is part of the Semperfli 12/0 70 denier range of Classic Waxed Threads (CWT), designed specifically for fly tying, including midges, emergers, and dry flies.
Typically used on hook sizes 10 to 20, this thread offers a strong breaking strain of 489gm (17.25oz) with a thinner profile compared to traditional 8/0 thread. It is favored by many fly tyers who prefer its balance of strength and visibility.
The thread features a two-core construction that lays flat and can be easily split to create dubbing loops. The wax content has been carefully calibrated to hold tying materials without clogging bobbin holders.
| Specification | Value |
|---|---|
| Thread Size | 12/0 |
| Denier | 70 |
| Length | 110m (120 Yards) |
| Breaking Strain | 489gm (17.25oz) |
| Use Case | Midges, Emergers, Dry Flies |
| Hook Size Range | 10 to 20 |
FAQ
What is the recommended hook size range for this thread?
This thread is typically used on hook sizes 10 to 20.
How does the 12/0 thread compare to traditional 8/0 thread?
The 12/0 thread offers similar strength with a breaking strain of 489gm (17.25oz) but has a thinner profile, making it more suitable for delicate fly designs.
Can this thread be split to create dubbing loops?
Yes, the thread can be easily split to create dubbing loops due to its two-core construction.
Emma Sharp –
I’ve been using this thread for several months on midge patterns. It holds well without breaking and splits cleanly for dubbing. The wax is just right—doesn’t clog my bobbin but keeps the materials in place.
Grace Piper –
Switched from 8/0 to 12/0 and noticed a significant improvement in fly appearance. The thread is thinner and still strong. Works perfectly on sizes 12 to 18.
Michael Glover –
Good strength and consistent performance. A bit harder to split than expected, but still manageable. Works well for emergers and dry flies.