The nail knot (sometimes referred to as the Tube Knot or Gryp Knot) is the traditional method of connecting your leader to your fly line.
It is used primarily in attaching two lines of different diameters and is preferred because the knot is very uniform.
It can also be used to attach your fly line to your backing...
Or (carp anglers take note!) to attach Mono or Braid to Lead Core.
You need a nail to hold between your fly line and your leader (Img.1). Wrap the tag end of your smaller line 6 times around the two lines and the nail moving towards the end of the larger line (Img.1). Now push the tag through the space created by the nail that you are removing (Img.1). Pull the tag and standing ends of the smaller line to tighten. Trim the tag ends, you can add a little Rig Glue, Pliobond or Aquaseal to the knot to help secure it and to allow it to travel through your guides more smoothly. I warn you now, this is not an easy knot to tie but with the Tie-Fast Knot Tyer it makes this knot a breeze. Get one, you will thank me later.
The Tie-Fast Knot Tyer is a handy tool for tying a Nail Knot (Gryp Knot) on a fly line. This knot can be used to attach backing to a fly line and a leader to a fly line. The inexpensive tool which is called a Tie-Fast Knot Tyer makes short work of tying the Nail Knot.
Knot-Tyer Nail Knot Instructions (Img 2)
1. Hold the tool in the palm of either hand. Place the leader (or backing if that is what you are attaching to the fly line) between the metal guides, on top of the pad and through the tips. Run at least 6 inches beyond the tip of the tool and hold in place with the thumb of the hand holding the tool.
2. Make 4 or 5 tight wraps around the tips of the tool working back toward your thumb.
3. Feed the tag end of the line under the coils just made and back out the tip of the tool.
4. Holding coils in place on the tool with your thumb, feed the end of the fly line into the tip of the tool under the coils and out about a half inch past the coils.
5. Hold everything in place gently and give a quick tug on the tag end of the leader or backing. This causes the knot to slide off the tool and onto the fly line. Make any adjustments needed and tighten down the knot firmly. Trim tag end and fly line close to the knot.
How to tie the Nail Knot - Video
Short demo video showing you how to tie The Nail Knot
For more information on the Tie Fast Knot Tyer click here.
With the Tie-Fast you can also tie the following knots:
1) Snell Knot (Provide an even, straight-line pull to the fish).
2) Uni Knot (Similar to the Snell Knot)
It is a reliable general purpose fishing knot that provide an even, straight-line
pull to the fish.
3) Blood Knot (Barrel Knot) - Join the butt end of a tapered leader to the butt section.
OR join Fluorocarbon to superbraids (fishing braid).
4) Nail Knot (Joining fly line to backing)
OR use the Nail Knot to join mono/braid to Lead Core.
5) Use the Gryp Knot for Lures (works great on cranks since you don't have to drop
trebles through a loop), Hooks and Swivels.
Gryp Knot Tip: For Extra Breaking Strength pass the line Through The Eye TWICE!
This knot won't fail - Your line may break near the knot but the knot will still be on the hook/lure or swivel.
6) Bomb Proof your Fly Line Loop.
7) Die Tie-Fast Knot Tyer en die Grypknoop - Afrikaanse artikel.