What is wet sanding?

• A. Sanding with water to smooth the surface
• B. Dry sanding with abrasive paper
• C. Sanding to remove corrosion from metal
• D. Buffing the surface for gloss

Answer: (A)

Wet sanding means sanding a surface with a lubricant, usually water, as you work. The water cools the area, prevents the abrasive from loading up with material, and carries away dust and particles. This lets you create a much smoother, finer finish and reduces heat buildup that could harm the surface. In auto body work, wet sanding is common when blending repaired areas and preparing a surface for primer or paint, because it helps feather edges and remove micro-imperfections without leaving deep scratches.

Dry sanding, by contrast, uses no liquid and tends to clog the paper, create more dust, and heat the surface more. Sanding to remove corrosion is a different task focused on rust removal rather than the lubrication and finish quality that wet sanding provides. Buffing for gloss is a polishing step, not sanding, though it can follow after wet sanding in a refinishing workflow.