Hello, I've been trying to sand an area of our hard wood floors to test the new stain color. We are attempting to refinish ourselves. I'm having trouble getting the sander to take off the finish. I bought a palm sander and am using a 40 grit paper. It seems the only area that is coming off is where the planks aren't level. I figure that I would need to use this to sand around the perimeter, but its not working.
The flooring is solid oak, but I'm not sure of the what the finish would be. I was told to try nail polish remover to determine, but that didn't seem to take off the finish. I tried wood stripper as well, but no luck. I'm out of ideas! How difficult should it be to get to the raw wood with a palm sander? Thanks.
How hard should it be to remove