We've recently installed solid oak flooring which was reclaimed from a home renovation. The results are great, we love the character of the aged wood. The floor still has to be sanded, stained and varnished but we're taking a break from all the cleaning and installing of the wood first. When it comes time to sand should we be looking at a drum sander or orbital? There are some inconsistancies in the thickness of some of the planks once they were laid down, which we expected. Which machine would be the most forgiving and give us the best result? My concern is that some of the raised edges of the planks could be ripped up during the sanding process. Any other suggestions?