I pulled up some nasty looking old carpet in a bedroom and hallway. The pad was glued down (you can see the trowel marks) and the glue is a biatch to get up. I've scraped and chiseled what I could without wrecking the oak underneath but as you can see there is a lot left. Some of it scrapes easy on the places the old finish is hard, but some also appears to be into the wood itself. Will this come up with a sander? Also, if I do get it off, can someone help me with matching the finish in the adjoining bedroom. I cant tell if its stained or not (floor is red oak) but I dont think so, and I dont know what the finish is (oil-based, water-based, urethane, etc).