Quick Answer
MIXING different types of bark for cordage is generally acceptable but can be unreliable for producing consistent quality. The success of mixed-bark cordage depends on the specific types of bark combined, their moisture content, and the processing techniques used. In ideal situations, it's best to use a single type of bark for optimal results.
Choosing the Right Barks
When selecting barks for cordage, look for those with high cellulose content, such as willow, aspen, or cottonwood. These barks tend to produce strong, durable cordage. Avoid using barks with high resin or sap content, like pine or cedar, as they can be difficult to process and may not hold knots well.
Preparing Bark for Cordage
To prepare bark for cordage, strip it from the tree during the dormant season when the bark is at its thinnest and most pliable. Use a sharp knife or a specialized tool to remove the bark in large sheets, taking care to avoid any underlying sapwood. Soak the bark in water for several hours to rehydrate it and make it easier to work with.
Working with Mixed Barks
When working with mixed barks, start by sorting the different types based on their texture, color, and moisture content. Combine barks with similar properties to ensure consistent results. Use a ratio of 2-3 parts softer bark to 1 part harder bark to achieve the right balance of strength and flexibility. Process the mixed barks together, using a combination of pounding, soaking, and twisting to create the desired cordage.
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