What is the best tool,,, for making,,,,, OTHER tools; I realize there is room for classifying, so, I'll take it as a chart?

Update: Material of which the "parent" tool itself is made, and material of which the "offspring" tool is made.
Update 2: For example, a file for grinding a metal, stone or bone axhead into shape, or else a chisel, or a hammer (small, for SHAPING, as opposed to mere breaking) , a woodcarving knife for shaping a wooden mallet,,,,,,,,
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