Coarse paper mounted with a variety of grit types, used in most stages of surfboard making. For instance, a type of sandpaper known as sanding gauze is often used by the shaper to do a final smoothing and tuning of the shaped blank. Thick-grit paper is used with a disc sanding machine to cut away excess resin following the hotcoat, and thiner paper grades are used to restore the original shape of the board. Finally, very fine grades of paper are used to cut back the final glosscoat ready for polishing.
A traditional name for coated abrasives that refers to early forms that used sand glued to paper. Most products now use synthetic minerals of aluminum oxide or silicon carbide applied to fabric backings. More appropriately called coated abrasive.
Sandpaper is used to smooth surfaces and eliminating small amount of material. The abrasive coating of crushed garnet, aluminum oxide, flint, etc. is glued to one side of paper or a thin flexible material.
Sandpaper is a form of paper where an abrasive material has been fixed to its surface; it is part of the "coated abrasives" family of abrasive products. It is used to remove small amounts of material from surfaces, either to make them smoother (painting and wood finishing), to remove a layer of material (e.g. old paint), or sometimes to make the surface rougher (e.g. as a preparation to gluing).