According to the search results, the best grit sandpaper to remove paint from wood is 80-grit sandpaper. However, some sources suggest that medium coarse sandpaper, graded between P80 and P180, can also be effective for paint removal. The coarseness of the sandpaper will depend on the amount of paint to be removed and the type of surface underneath it. It is important to sand with the grain of the wood to avoid damaging it. When sanding to remove paint, it is recommended to wear safety goggles and a face mask to avoid inhaling dust generated during the process.