Usage
The FG Knot is a bend often used in salt water angling. It is a very strong knot used to tie two different diameters of line together — for instance to tie monofilament or fluorocarbon to braid. The FG is smooth and easily passes through guides. The knot shown here is one of two knots commonly referred to as the the "FG Knot".
History
Although the exact origins of the FG Knot are unknown, the knot was popularized by sport fishermen in Australia.
Structure
The FG Knot starts with weaving the leader back and forth around the braid loop 20-30 times in a figure 8 fashion. The braid tag end is used to finish off the knot by making at least three half hitches around both the leader and the braid. Pull hard and lock it all down. Trim the leader close to the knot. Complete the knot with the tag end of the braid forming at least two more half hitches around itself.
Strength/Reliability
The FG is a very thin knot that still has a very high breaking strength. It is important that the lines be kept under tension while being tied and the weavings be cinched down as you go.
Note
As with most fishing knots, remember to lubricate the knot while tightening. Lubricating the knot, typically with water or saliva, reduces friction as the knot is tightened, preventing heat buildup that can weaken the line. This is particularly important for monofilament and fluorocarbon lines, which can be damaged by the heat generated during knot tightening. Proper lubrication allows the knot to cinch smoothly and evenly, preserving the line’s strength and ensuring a more reliable knot.
