Arbor Knot

The Arbor Knot is the very first knot every angler needs to learn because it is the foundation of your entire reel setup. This simple knot attaches your fishing line directly to the reel spool arbor, giving you a secure starting point before winding on hundreds of yards of line. Without a reliable arbor connection, your line can spin freely on the spool under heavy drag pressure, especially when a big fish takes a long run. The Arbor Knot works with monofilament, fluorocarbon, and braided lines, though braided line benefits from a strip of electrical tape or a mono backing layer first since braid tends to slip on smooth metal spools.

How to Tie the Arbor Knot

1. Pass the tag end of your line around the reel spool arbor.
2. Tie a simple overhand knot around the standing line with the tag end, forming a loose slip loop around the spool.
3. Tie a second overhand knot in the tag end alone, approximately one inch from the first knot. This acts as a stopper knot.
4. Moisten both knots with saliva or water.
5. Pull steadily on the standing line to slide the first overhand knot down toward the spool.
6. Continue pulling until the stopper knot cinches tight against the first knot and the loop grips the spool arbor snugly.
7. Trim the excess tag end to about one-eighth inch.

When to Use the Arbor Knot

• Spooling a new reel with monofilament, fluorocarbon, or braided line for the first time.
• Re-spooling a reel after stripping off old, worn line at the start of a season.
• Adding backing line to a fly reel before attaching the fly line, or adding mono backing beneath braided line on a spinning reel to prevent spool slip.
• Emergency respool on the water when you have lost most of your line to a break-off or a tangle and need to put on fresh line from a spare spool.

Pro Tips

• When using braided line, wrap a single layer of electrical tape around the spool first or tie on 20 yards of monofilament backing with an Arbor Knot before connecting braid. Braid is slippery and will spin on a bare spool under heavy drag.
• Keep tension on the line with your fingers as you wind it onto the reel to prevent loose wraps that cause tangles and wind knots later.
• Make sure the line comes off the filler spool in the same direction your reel turns to avoid adding twist. For spinning reels, lay the filler spool flat and check which orientation feeds line without spiraling.
• Mark your line capacity by counting the number of handle turns during spooling. This tells you roughly how much line you have out when a fish makes a long run, which is invaluable for managing drag pressure.

Pros and Cons

Pros:

• Extremely easy to tie, even for complete beginners or in poor conditions like cold hands or low light.
• Works reliably with all common line types including mono, fluoro, and braid with appropriate backing.
• Requires no special tools or accessories to complete.
• The stopper knot prevents the slip loop from coming undone, adding a layer of security.

Cons:

• The knot can slip on smooth, polished spool surfaces, particularly with braided line, unless you add backing or tape.
• It is not designed for direct load-bearing connections to hooks or lures, only for securing line to the spool.
• If tied carelessly with too much tag end sticking out, the bump can cause uneven line lay on the spool.
• Under extreme drag scenarios where a fish empties the entire spool, the Arbor Knot alone may not hold against heavy braid without additional backing measures.