Tools & Cordage

Make cordage from tree bark

You make two-ply bark cordage by twisting two bundles of inner-bark fiber individually in one direction, then wrapping them around each other in the opposite direction. The opposing twists hold the fibers together and keep the finished cord from unwinding. Use it for repairs and light shelter lashings; well-made, tested cord may also serve as a bow-drill string, though friction can wear it out quickly. Dogbane is a fibrous herb rather than a tree, and dead bark from any source must still have tough, flexible fibers to work.

Tools & Cordage 20 min practice Intermediate Practice where you can legally gather dead plant material, such as woodland with fallen basswood, willow, or suitable cedar, or open ground with dead dogbane stalks. A sheltered work spot and access to water help you keep fibers manageable; rotten, crumbly material is unsuitable.

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Topic summary

Key takeaways

The two plies form an even spiral and remain together when you briefly release your working grip.
The cord has a fairly uniform diameter without abrupt lumps, gaps, or thin sections.
Staggered splices stay in place under a steady hand pull.
The cord bends around a stick without cracking, shedding large amounts of fiber, or opening into separate bundles.
Avoid: Using weathered or rotten bark produces weak cord, so test a sample with a firm pull before preparing a whole batch.
Avoid: Working dry, brittle fibers causes breakage, so moisten them until they bend without cracking.

Intended uses

Tools & Cordage skill (Intermediate, ~20 min practice)
Requires: Small knife for lifting bark and trimming fibers, Smooth stick or blunt scraper for removing brittle outer bark, Container for moistening fibers

Climate suitability

Practice where you can legally gather dead plant material, such as woodland with fallen basswood, willow, or suitable cedar, or open ground with dead dogbane stalks. A sheltered work spot and access to water help you keep fibers manageable; rotten, crumbly material is unsuitable.

Far North Bushcraft — Willow Bark Cordage Watch on YouTube

Safety: Identify plants before harvesting, avoid stripping living trees, and keep clear of unstable dead trunks and hanging limbs. Dogbane sap is toxic if swallowed and can irritate skin, so avoid sap contact and wash your hands before eating; never use homemade bark cordage for climbing, rescue, or supporting a person.

Required tools

Small knife for lifting bark and trimming fibers
Smooth stick or blunt scraper for removing brittle outer bark
Container for moistening fibers

Required materials

Long, sound inner-bark fibers from dead cedar, basswood, or willow, or bast fibers from dead dogbane stalks
Water for dampening dry fibers

Step-by-step

Strip long ribbons of inner bark from dead cedar, basswood, willow, or dogbane.
Why: Long inner-bark ribbons give you continuous fibers with fewer weak joins; remove the brittle outer bark and reject fibers that crumble or snap under a firm pull. Some bark needs soaking and gentle scraping before it separates, so begin your short practice session with prepared material if necessary.
Split the ribbons to pencil-lead thickness. Bunch them into two equal strands.
Why: Fine strips bend and twist more evenly than broad ribbons, while equal bundles share the load and produce a balanced cord. Treat pencil-lead thickness as a rough guide, and dampen brittle fibers until pliable rather than dripping wet.
Twist one strand away from you until it kinks, then bring the other strand over it.
Why: Twisting establishes tension within one bundle, and crossing the other over it begins locking that tension into a two-ply cord. Pinch the crossing point and make the crossing opposite to the individual strand twist, using the kink as your starting fold rather than allowing tight snarls.
Twist the new top strand away, wrap it over — repeat, feeding in new fiber as strands thin.
Why: Repeating the same twist-and-opposite-wrap sequence keeps the cord from unlaying when you release it. Maintain your pinch at the working junction and add fiber before a bundle becomes noticeably thin so the finished cord stays even.
Splice new fiber staggered so the joints don't line up.
Why: Staggering the additions prevents both plies from depending on a splice at the same point. Lay each new fiber alongside its bundle with a generous overlap of several inches, then twist the old and new fibers together rather than joining their ends with a knot.

Common mistakes

Using weathered or rotten bark produces weak cord, so test a sample with a firm pull before preparing a whole batch.
Working dry, brittle fibers causes breakage, so moisten them until they bend without cracking.
Twisting the bundles and wrapping the plies in the same direction makes the cord unravel, so keep those motions opposite.
Letting go of the working junction loses tension, so keep it pinched while repositioning your fingers.
Adding thick clumps or joining both plies together creates uneven weak spots, so feed in small tapered additions at separate locations.

Troubleshooting

If the cord opens when you relax your grip, then check that each bundle is twisted away from you and the pair is wrapped in the opposite direction.
If fibers snap as you twist, then dampen them and try again; replace the material if it still breaks easily.
If a splice slips under a firm pull, then undo that section and rebuild it with a longer overlap and consistent twist.
If a bow-drill string frays or a lashing loosens as it dries, then stop loading it, inspect it, and replace or retighten it before continuing.

Field practice drill

Spend about twenty minutes working with prepared fibers: test and dampen them, make two equal bundles, and reverse-wrap a forearm-length cord with a staggered addition in each ply. Secure the ends, pull steadily with your hands, and inspect for slipping or thin spots. Repeat a short section, aiming for a more even diameter and fewer grip adjustments.

Indicators of success

The two plies form an even spiral and remain together when you briefly release your working grip.
The cord has a fairly uniform diameter without abrupt lumps, gaps, or thin sections.
Staggered splices stay in place under a steady hand pull.
The cord bends around a stick without cracking, shedding large amounts of fiber, or opening into separate bundles.

Related outdoor skills

Educational reference only. Wilderness conditions change fast — practice in low-stakes settings, take a certified wilderness first-aid course, and confirm regional regulations before you rely on any of these skills in the field.