If I had a time machine

If I had a time machine, Guy would have swiped it yesterday, gone back about a hundred years, and smacked whoever put three coats of ugly brown varnish on that beautiful wood floor he just spent two days sanding.  It took over two dozen sheets of 20 grit, one by two foot pieces of sandpaper, and about 60 discs of sandpaper, but he finally got the last of it up last night.  The friction caused so much heat that the varnish melted, not sanded, and it gummed everything up.  It needs a bit of...