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Millstone 3D Model
A 4ft 6ins dia. by 12ins thick millstone weighting 1.3 tons that was once in use at Upminster. This is made from French Burr, the preferred stone for milling fine flour. It is not a single piece of stone, but made up from blocks held together by iron hoops, with Plaster of Paris used to fill the cracks and stabilize the assembly. The pattern of grooves in the face of the stone are known as its dressing, and as the stone revolved they channelled grain from the eye, the centre of the stone, to its outer edge, and improved the grinding action. Re-cutting the grooves as a stone wears down (the act of dressing) is a highly skilled craft and done with great precision.