In automotive refinishing, how should you choose between dry sanding and wet sanding?
Both dry sanding and wet sanding are common. The key is not which one sounds more advanced, but which one suits the current step better.
In general:
• Dry sanding is better for fast shaping, higher efficiency, and continuous work with a dust extraction system.
• Wet sanding is better for fine surface refinement, controlling local heat buildup, and reducing airborne fine dust.
When to prioritize dry sanding:
Dry sanding is usually more efficient for body filler shaping, sanding surfacer or primer, and any step where material must be removed quickly.
When to prioritize wet sanding:
Wet sanding is usually better for pre-topcoat refinement, pre-polish correction, and jobs where scratch consistency matters more.
Practical note:
Before wet sanding, confirm that the abrasive and backing support wet use. During dry sanding, poor dust extraction will make clogging, heat, and dust problems more obvious.