You got to pick the size appropriate for you are making.
FWETFL602084 FL-602 x 84.0" FWET - this is 84" long piece of .602.
You can cut them down with a saw. You can make a basic one much like a sword.
But look at some pictures and see what other folks did, and try it out. The core lasts forever so if you don't like how it comes out you can remake it.