The kitchen floor needed help. Actually, it needed help the last time I lived here, but THIS time I decided to tackle it before I actually move in. (It helps to have a space completely devoid of belongings when you want to do something like this right.)
The floor, despite being part of a 200 year old farmhouse, is nothing special...it's a patchwork of different kinds of lumber, replaced parts, 3 significant holes (like, big enough to twist your ankle in!), and a variety of other factors all come into play.
I started with a palm sander. This was frustrating, and backbreaking. So I rented a large floor sander. Complete and total failure, waste of a day and money. You cant use a large sander on boards that are...ummmm...full of character. Back to the palm sander and 40 grit paper.
It's getting there. Today I put the first coat of poly on it. :)