On the Difference between Grinding and Polishing
Apr 04, 2012 · The insightful difference between grinding and polishing, in essence, is this: grinding is scratching a surface and polishing is melting it. Here's a simple experiment you can try at home to help make your understanding of grinding more, um, concrete. First, buy a shiny new car (I like Lamborghinis). Next, put a bit of beach sand on the hood.