12 Best Wet Grinders in India 2021 Buyer s · Best wet grinder in India FAQs How does a wet grinder work Stone was the primary material used to make grinders P Sabapathy invented the grinder in 1955 in Coimbatore He then went on to introduce them in Chennai and Madurai Most of the modern wet grinders consist of a metal drum in which there are rotatable granite stones The material gets crushed between the metal drum and