So recently i found about millstones are broadly used to grind many stuff… I have looked around and i cannot find how do they actually spin. Its 2 huge rock discs on top of eachother with a grid on them that grinds the stuff like beans to make tofu… But how does it actually spins? I know there must be an axis to keep them and that they are separated my like half a milimiter. But this does not asnwer my question on whats is spinning. Lastly, how do you not get bits of stone added to the food?
In: 1
Some you can turn by hand, others are turned by animals, water mills use water, and wind mills use wind.
In any case something creates motion, and that motion is used to turn the stones, be that directly with a beam of wood or through a series of gears.
Millstones have channels cut into them which causes them to shear whatever they’re milling with side to side force, not simply crush it with downward force.
[Picture of the inner facing surfaces of a millstone.](https://i.ytimg.com/vi/othUyF4f3Ww/sddefault.jpg)
Edit: And you do still get bits of stone in it, they’re just sifted out now-a-days, and would damage your teeth in ye-olde times.
Latest Answers