The Albright knot
The Albright solves the problem the uni cannot: it joins lines of very different diameter. A thin line will not seat around a thick one — it simply bites into it.
How it is tied
The thick line is folded into a loop. The thin line goes into that loop, wraps both of its legs — ten turns and more, working from the bend towards the open end — and comes back out through the same loop, on the same side it went in.
Then wet it and pull on both standing lines. The turns slide down to the bend of the loop and clamp there.
The thick makes the loop, the thin wraps
The order is not arbitrary. The loop is always folded from the stiffer or thicker line, and the softer one does the wrapping. Done the other way round, the turns do not hold and slip off the loop under the first load.
This is the commonest mistake with this knot, and it looks like «the Albright does not hold» even though it was tied neatly.
Where it fits
Braid to a thick fluorocarbon leader, main line to a wire trace through a loop, a thin fly tippet to a thick butt. Anywhere the diameters differ enough that an ordinary connection will not seat. The leader materials themselves are covered in the section on leader material.
What else it is good for
Besides unequal diameters, the Albright is taken where one of the lines is not really line: a wire trace, titanium, a thick monofilament shock leader. In those cases it is the stiff material that makes the loop.
For a shock leader this is particularly handy: the step from thin main line to the thick shock section passes the guides on every cast, and extra bulk there is felt.
Where it loses to the FG
It is thicker. The turns lie on the loop rather than in a single layer, so it passes the guides more noticeably. If the connection travels through the guides every cast, the FG will be neater.
On the other hand the Albright ties faster and tolerates wind — on the bank that often decides more than a few extra tenths of a millimetre.
What to do if it creeps
The Albright creeps for two reasons, and both are visible. First — the turns have not slid down to the bend and sit in the middle: then they are drawn down while the loop is held. Second — the loop was folded from the thin line instead of the thick, and there only retying helps.
Checking it
A finished Albright should be a tight cylinder on the bend of the loop, with no gaps between the turns. The thick tag is trimmed leaving a few millimetres, and never flush: it is what keeps the turns from sliding off.
The thin tag is trimmed with the same allowance. Both tags must point in opposite directions — tags facing each other mean the thin line entered and left the loop from different sides, and such a knot will come undone.