wet sanding noun5 •The process of sanding with extremely fine-grained sandpaper, using a lubricant such as oil or water to prevent the sandpaper from clogging.Some wet sanding and a few more coats of varnish had it looking respectable enough to antique. — 1976 •Sanding with fine-grained sandpaper and lubricant.You should anticipate that it will take about four or five applications of three coats each (and subsequent wet-sandings) before the parts are finished. — 1986 •Alternative form of wet sanding. •The process of smoothing damp material with a sponge.An alternate sanding method is wet sanding. It involves blending in the edges of the joint compound by stroking them with a wet sponge. — 1998 •Smoothing damp material with a sponge.Wet-sanding with a damp sponge works well too. — 1997 formswet sandings · wet-sandings