Check out these grinding machining images:
Best China Grinding China Machine in the World 😉
Image by NJ..
– Canon 1000D + Canon 50mm 1.8
– This is an old style grinding machine (no electricity required) used to grind wheat, rice, etc., to prepare food like dosas, idllis, chatnis, sweets, spicy mixtures etc.,
– This is hand driven pestle & mortar, the ingredients are put in the bowl (bigger stone) and a small stone with an wooden handle on top is rotated for 5-30mins by hand, frequently even water is mixed to get desired paste
– These are still used in villages and during various ceremonies, specially in India
– It is traditional in various Hindu ceremonies (such as weddings, and upanayanam) to crush turmeric in these mortars
– Food made using these tastes the best in the world, I bet because it is so natural !
Fabricated grinding machine
Image by IITA Image Library
Man operating a fabricated grinding machine grinding food products in an area.
Mirror China Grinding China Machine, G. W. Ritchey
Image by cliff1066â„¢
George Willis Ritchey built this mirror grinding machine at the Yerkes Observatory in Williams Bay, Wisconsin in the late 1890s. Under the sponsorship of George Ellery Hale the machine was used to grind a series of telescope mirrors starting with a 24-inch and then a 60-inch mirror for a telescope initially intended for the Yerkes Observatory. The grinding machine was moved to Pasadena in 1904 to complete work on the 60-inch mirror. At some later time the apparatus was transferred to the California Institute of Technology. The Institute then sold the machine to the Lick Observatory of the University of California in 1949. The machine was used for making numerous mirrors over the next four decades and extensively modified over that period. It embodies the "sub-diameter tool" design approach to making large telescope mirrors whereby the grinding tool is drawn across the mirror blank by programmable rotating arms.