Bark Cordage: Is It Strong Enough for Survival Needs?

Types of Bark for Cordage

Not all tree bark is suitable for cordage, but certain species like cedar, cypress, and fir have bark that can be used to create strong and durable cords. These trees’ bark is typically thicker and more fibrous than other species, making it easier to strip and process for cordage. For example, the bark of the eastern white cedar tree (Thuja occidentalis) can be stripped into thin strips, which can then be woven together to create a strong cord.

Stripping and Processing Bark for Cordage

To strip bark for cordage, start by selecting a tree with suitable bark and cut a section of the trunk or branch. Use a sharp knife or a stone tool to carefully peel the bark, working from the bottom up to avoid tearing the fibers. Once you have stripped the bark, use a simple technique like the “Z twist” or the “square knot” to weave the strips together. For example, to create a Z twist cord, start by holding two strips of bark together and twisting them in a zigzag pattern. Continue twisting and adding more strips to create a strong and durable cord.

Measuring the Strength of Bark Cordage

To test the strength of your bark cordage, try a simple tensile test. Cut a section of cordage and tie a weight to one end. Slowly pull on the cord, measuring the amount of weight it can hold before breaking. For example, a well-made cordage from eastern white cedar bark can hold up to 20 pounds of weight before breaking. This may not be enough for some survival situations, but it can be sufficient for tasks like securing a shelter or creating a makeshift tow line.