Grinding is the act of wearing down, polishing or sharpening a surface by way of friction. Grinding is a finishing process that uses an abrasive wheel or disc to smooth or flatten metallic and nonmetallic work pieces.
Grind
Grind
![grinding wheel](/sites/default/files/styles/teaser_card_thumbnail_600x430/public/images/bigstock-industrial-grinding-finishing-231829084-min_0.jpg?itok=BBAnBv6D)