This project was inspired by a family I stayed with in Kenya. The only utensil they had was a sharpened butterknife shared by about twenty people.
Select your "blank":
Test your butterknives by bending the blade with your fingers. The farther you can bend it without it staying bent, the better it is.
Instead of a butter knife, you could use a saw blade or any piece of metal.
WARNING: I will be showing a bunch of OPTIONAL steps using tools.
For purist "no-tool" knifemaking, just skip all the steps using tools.
Or just substitute "with a rock" for the name of the tool.
Your knife will be fine.
Step 1: Optional: Drill Holes in Each End of the Handle
Skip this and the wrapping is the same and 95% as good.