Any two stone of difference hardness gives a sphere.... and all the wonderful vocabulary of feudal milling https://en.wikipedia.org/wiki/ThirlageSome kind of grindstone used to process unobtanium...
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Mill bitch is a novel one.Any two stone of difference hardness gives a sphere.... and all the wonderful vocabulary of feudal milling https://en.wikipedia.org/wiki/Thirlage
I know, I know, it's Dental health week!
yeah? "The chances of succeeding with it seem theoretically good."