So I used an old piece of string (Origin, bought secondhand; it was fraying already during stringing ) and I ran out of string towards the end of my crosses. I didn't have enough left to pull the last cross and the last knot. I pulled the last cross by hand and clamped it. I pulled the knot by hand and tied it. Certainly, the last cross is lacking in tension. How much will this effect the entire stringbed? I wouldn't do it for a client, but for me I can live with it as long as the stringbed plays okay.