4- Polishing and Buffing
{"Image DocumentName": "4- Polishing and Buffing", "Image ImageDescription": "Polishing is used to remove scratches and burrs and smooth rough surfaces by means of abrasive grains attached to the polishing wheel rotating at high speed around 2250 m/min. The wheel, flexible wheel, is made of leather, canvas, felt and papers. And grit size of 20 to 80 for rough, 90 to 120 for finish. Buffing is similar to polishing with softer wheels, finer abrasive materials. Speed ranging from 2400 to 5100 m/min.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}