What is the purpose of "wet sanding"?

"wet sanding" or "color sanding."

What do these terms mean and when and how should you use these procedures?

Sometimes the only way to remove or lighten a heavy imperfection is by sanding the paint surface. This can be a fast and effective way to remove a heavy scratch or scuff, if you are skilled and very careful. On the other hand, this method may lead to a trip to the spray booth if you are over zealous and not aware of when to stop.

During the process of wet sanding you are actually "shaving" a minute layer of clear coat off the paint surface to level out a deep scratch. This is also the process used to remove scuffs or marks left by other cars. Wet sanding is also used in many body shop procedures such as evening out a run or sag, eliminating dry spray, "knocking down" too much orange peel, or getting rid of dirt that got caught on the finish during the paint process. In many cases wet sanding can be more effective than trying to compound these imperfections out. Wet sanding will not create the heat that compounding will, but many times is more aggressive, and special care must be taken throughout the entire process.

While "wet sanding / color sanding" is a means of removing scratches and other imperfections in a paint job, that is not the primary purpose for the technique. The primary purpose of wet sanding is that it is necessary within various methods of applying paint to a surface so that a mirror-like, reflective finish is achieved.

This Site Might Help You.

RE:

What is the purpose of "wet sanding"?

Wet sanding is a cleaner alternative to regular sanding of drywall mud from remodeling and repairs. Wet sanding requires a special sanding sponge that replaces the traditional drywall sanding screens and blocks. The sanding sponge is used barely damp and requires frequent rinsing and wringing during wet sanding.

Wet sanding is a great alternative to dry sanding when repairs have been made to damaged drywall or plaster, as well as in remodeling that occurs in or near lived-in areas of the home. In wet sanding, the sponge is damp enough to significantly reduce the amount of sanding dust that becomes airborne. For this reason, persons with allergies living through a remodel or repair may well appreciate this alternative technique. In high-use areas of the home such as kitchens or baths, wet sanding can significantly decrease the mess that normally accompanies drywall repair. <a name="wet-sanding" href="http://www.wisegeek.com/what-is-wet-sanding.htm#il... source</a>

To get a smooth finish