Patent ID: 6988940

Claim:
A sander comprising a central column providing a channel for vacuuming air through its interior surface and said central column supporting a head of a sander and a body of said sander on an external surface of said central column, and, said sander head comprising a replaceable air-permeable abrasive resilient screen supported by an air-permeable malleable cushion, which said cushion is in turn supported by a funnel-like platform, which said platform rides on said central column and a sander body comprising: a first container which rotates on and moves up and down said central column and a second container which rotates on said central column at a fixed path of rotation while said second container loosely embraces said first container with enough space between respective walls of said two containers to permit the insertion of respective end edges of said abrasive screen and a means of moving said first container downward to sit in said second container so that said end edges of said abrasive screen may be trapped and looked in place between said walls of said two containers and moved upward to release said abrasive screen.