The sinew thread is single ply strands from reindeer backstrap sinew. It is twisted like this to keep it together. For longer, stronger threads I'd use two ply threads, but for this project that wasn't needed.
The small tear down in the bottom is sewn tight with an antler needle. For this I used a simple overhand stitch. For the rest I used running, double stitches.
On the top of the lining I sewed in a short braided cord of elm bark to tie off the opening of the pouch. The knot here is excellent for tying off the end of a seam.
The finished result: A tinder pouch.
