What grit of sandpaper is most likely to provide the smoothest finish?

The selection of a higher grit sandpaper is the right choice for achieving the smoothest finish on a surface. Sandpaper grits are classified based on the size of the abrasive particles they contain, with lower numbers indicating coarser grits and higher numbers indicating finer grits. While coarse grit is effective for removing material quickly and medium grit can help refine the surface, neither will yield the fine level of smoothness that higher grit sandpaper can provide.

Higher grit sandpapers have smaller abrasive particles that don't just smooth out roughness; they also minimize visible scratches left by lower grit sandpapers. This makes them ideal for final finishing stages where a polished look is desired, such as on woodwork, cabinetry, or any surface where a refined texture is important. Thus, utilizing higher grit sandpaper is essential for obtaining that sleek and professional finish.