If I were to do a leather or beavertail grip on my own and wanted to lace it up with sinew, what size sinew should I use? Ive seen #30 and #70....and I would imagine there are more sizes?
Depends on how heavy your leather is, but I expect the 70# artificial sinew (it's not real sinew) would work the best.
I used to use artificial sinew for lacing on leather grips,now I prefer to use a waxed linen thread.I get that at Tandy and you can get it in natural,black and brown.