Sanding and Refinishing Parquet Floors(CLICK and READ):
Although this is one of the most comprehensive videos on parquet restoration, it is really only the visual aid to the written tutorial linked above. In the video I demonstrate sanding with the belt sander with 36grit (straight across the floor, important for parquet, again click the link above), round the edges with 36 grit. Then I continue up through 60 and 80 grit on the belt sander, 60 grit on the edge sander, 36 grit corner sanding before mass filling the floor. Then 100g diagonally with the belt sander, 80 grit with the edge sander, and a good thorough buffing with 80 grit under the buffer.
I then finish with (after vacuuming) with 1 coat of seal and 2 coats of lacquer.