Howdy!
Just asking advice if anyone knows good tutorial about how to make a bowstring out of sinew - thanks!

i would like one to, are you talking about real or artificial sinew. I have some nice #70 artificial sinew that I wanna use

Artificial sinew will work for a bowstring, but it stretches A LOT!  It will constantly be in a state of movement and will never really settle down unless made fairly thick, which is a whole other ball of wax.  I used to use it when I first started building bows because I had a ton of it laying around.  I was always adjusting the string to maintain brace height, and the bows just shot sloppy compared to a string made with less elastic materials.  

But, if you've got it, it WILL make a string.  It makes an especially fine historical replication.  

Hi!
Yes, real sinew from moose...so quite a feat probably, the string would perhaps be more of a study about the technique - not so much to everyday use. Need to dig some more for the information and thanks for thr responses - take care !