22nd May 2012, 08:10 PM
I've often wondered how you might go about breaking a quern stone accidentally. They're pretty solid bits of kit. I'm not sure a "weak point" in a 2ft diameter, 5 inch thick (sorry I can't break the Imperial habits of my parents' lifetime) chunk of millstone grit would be susceptible to damage by one person winding a handle on it, even on the uneven suface provided by whatever's being ground.