Thank you everybody. The string is just waxed nylon. It casts an arrow, costs less than a buck, takes 15 min to make and lasts longer than sinew. I still prefer sinew but this is easier. Here are a couple closer pictures of the tips. I copied em from the Miwoks. Sinew formed into hooks. I covered these ones with rawhide for looks and to protect the skin from the string over time. This is also the improvement I will make on the next one of these. I left the wood too thick on the tips and it didn't hit me till after I made it thicker with the hook nocks. Taking some mass off the tips for a faster arrow. I would call this bow a hybrid. I copied cultures from throughout the western US and threw in eastern Europe, with a dash of what I have seen on this site.
Thanks again
Chuck