Sanding Oak Hardwood Floors
We rented an orbital sander and started with 36 grit paper. It left circular scratches all over the floor. We then used 60 grit paper, then 80 grit and then 120 grit. None of them removed the scratches. We tried a hand sander with 60, 80 & 120 grit and also rented a vibrating sander and used 60, 80 & 120 with it too. It seems that each different grit leaves it's own circular scratches. We then stained the floor in a closet to see if the scratches would be enhanced once stained. Just prior to staining we vacuumed and mopped the floor which caused the grain to pop and left streaks in the stain where the floor was apparently still wet. We then rented another vibrating sander and used 80 and 120 grit and with the 120 grit the sander tore a piece of wood, even though we had just vacuumed the area and there was nothing for the sander to catch on. This has all taken a long time so the wood has been exposed for over a month, could this be the reason that the sanding process is causing more damage each time? How do we proceed, is there a conditioner we should be using or something else we should be doing?