Quick Answer
To apply sinew on bows effectively, it's essential to prepare the stave, cut and shape the sinew strips, and apply even tension to achieve a secure bond. A well-made sinew-backed bow is strong, durable, and resistant to weathering.
Preparing the Stave
When selecting a stave for sinew backing, look for straight-grained wood with minimal knots and irregularities. Cut the stave to the desired length, then use a drawknife to flatten and smooth the surface. Tillering, or shaping the stave to a consistent thickness, should be done carefully to prevent unevenness that can affect the bow’s performance. A stave with a thickness of 3/4 inch (19 mm) is ideal for a sinew-backed bow.
Cutting and Shaping Sinew Strips
Cut sinew strips from the hide of large game animals, such as deer or elk. Use a sharp knife to cut the strips into 1/4 inch (6 mm) wide and 1/8 inch (3 mm) thick pieces. Cut enough strips to cover the bow’s back, then use a bone or antler awl to shape the strips into a consistent, thin shape.
Applying Sinew Strips
Start by applying a thin layer of plant-based glue, such as pine resin, to the bow’s back. Then, place a sinew strip along the center of the bow, applying even tension to ensure it’s flat and smooth. Continue applying strips, overlapping each one by about 1/4 inch (6 mm), until the entire back of the bow is covered. Use a bone or antler scraper to smooth the sinew strips, removing excess glue and creating a uniform surface.
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