Use the end of the handle to rotate the grinding plate on the bottom of the. The spinning impellers use centrifugal force to push food against an immobile grinding ring to break it. Waste King Legend Series 1 2 Hp Continuous Feed Garbage Disposal L 1001 The Home Depot Garbage Disposal Noise Insulation Garbage Sense Vance explains how a garbage disposal grinds food and waste into small particles. How do garbage disposal work . Instead impellers or lugs mounted on a spinning plate use centrifugal force to continuously force food waste particles against a stationary grind ring. Repairing a garbage disposal is a simple and rewarding task that homeowners and renters alike should be prepared for. At first a shredder is used that remains inside the disposal. A garbage disposal is a repository for odor-causing microorganisms. There are several different type of garbage disposals including batch feed and continuous. It helps to break down the large food particles. If the c...