Author: Trout's Staff
The blood knot is most commonly used for joining monofilament of similar diameters together. Most people will use this knot instead of the classic double surgeons, as it tends to finish a bit cleaner. When you first tie this knot you will a bit challenged and uncoordinated, but like any other knot, with practice you’ll quickly get the hang of it.
Lay the lines on top of one and other facing in opposite directions. Cross one end over the other, and wrap this line three or four times around the other. Then place the end of this line in the crotch or the V formed by the two lines.