This is furniture i've had since i was a kid. Probably a good 15-20 years old. The furniture to me feels like 100 percent wood. Anyway, as i was sanding down a few waterspots i noticed this spot beginning to uncover. Is this not 100% real wood? Did i just sand down into particle board? SEE PICTURES BELOW the quality is really crappy because they won't let me upload larger than 100k files ARGH!!!!