How Do I make a mill/grinder for bark and bone?

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richardwalter
How Do I make a mill/grinder for bark and bone?

I am trying to figure out how to create this machine with little or no money which is completely possible because there is a huge surplus of useful garbage. I have been breaking up bark with pliers and i need a large quantity peferrable powdered or close to it. i have been lookin for some kind of grain grinding discs/plates.

i was thinking of making my own has anyone done that?

I am either going to use a deep cycle or bicycle.

If anyone has metal working skills or black smithing skills. to help me figure out how to make a grinding disc that is pretty strong.

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