Every primitive archer should know how to make a sinew bow string. I've tested a bunch of different materials and I keep coming back to sinew. If you want a much more detailed video to make your own, just search "HuntPrimitive sinew bowstring" on YouTube and you'll find some videos. If you think someone might benefit from the video, don't be afraid to share it! Best of luck on all your builds and hunts! | HuntPrimitive / Gill's Primitive Archery