Anytime you grind or abrade any surface, whether or not the abrasive product throws sparks, always wear suitable eye protection. A better choice is an OSHA-approved face shield. Another good idea is to wear a disposable face mask typical of the type painters wear. This will prevent you from ingesting any of the dust that comes off the surface you are abrading. If you use a power tool of the type that emits a high pitched squeal, we suggest ear protection.
Ear plugs are good.
Better are a set of OSHA-approved ear muffs of the type worn by people who work around jet aircraft. Lastly, we suggest you wear a pair of gloves when you work with abrasives. They will prevent injury should you accidentally touch your hands or arms with the abrasive tool and they will keep the fine dust that comes from grinding metal surfaces from working into the pores of your skin. All rights reserved - Any unauthorized copying or distribution forbidden by law.