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Table 2 Safe use of angle grinders

From: Penetrating facial injury from angle grinder use: management and prevention

Safe use of angle grinders
Safety measure Advantage
Use the correct disc size and replace the disc when wear is obvious or the disc is chipped Reduces the risk of a foreign body injury as a result of disc disintegration
Stop using if vibration is very apparent  
Do not remove the guard unless for maintenance Increases personal protection from direct and foreign body injury
Never use an angle grinder overhead  
Stand perpendicular to the plane of the cutting wheel, i.e. cut in a para-coronal plane to reduce the risk of kick back towards the sagittal plane of the body  
Always wear appropriate personal protective equipment/clothing (gloves, goggles, and hard-hat preferably with face shield)