Yeah, I did a lot of research and experimentation when designing that thing. And yes, I did settle on an Allen wrench for that reason. It is incredibly strong and can take much abuse before breaking.
As already mentioned, the tool is meant to be used in a vise to give it mass and not be bouncy. If you don’t have a vise, at least lay the tool on something hard and heavy like a brick or concrete. It will make all the difference in the world.
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