Has anyone heard of this being used on hardwood floors? The large plate for the buffer has seemed to proven successful. This plate for the hand held grinder, would turn considerably faster. I think it would burn the substance you where grinding. Have a look;
http://www.diamabrush.com/hand%20tool.htm
Dan

Looks good in the video. I've heard of people using the big plate for adhesive removal on hardwood floors.