This month we're finishing up a two-part series on painting techniques. Last month, we applied the paint, now we're going to make it look how show car paint should. The color sanding process removes any surface imperfections in the paint, like dirt, orange peel effect, drips or other contaminants. By sanding down a thin layer of the clearcoat and buffing it back to a deep shine, you'll be amazed at how much better your painted projects will look. This technique requires some practice, so paint some scrap pieces (old fenders from a scrap yard work great) and perfect your skills before tackling a real project. Send your questions to featurecar@sourceinterlink.com with Tricks of the Trade in the subject line, and check out stevebrownuniversity.com for more custom tricks.
1. Last month, we showed you how to paint this panel using a basecoat/clearcoat system. The results are good, but they can be much better after using this technique. Notice the slight waviness in the surface, called orange peel. After the paint cures for at least 24 hours, it's ready for the color sanding process. | 
2. The first thing you'll need is a good rubbing compound. 3M's Perfect-It 3000 is one of the best on the market. | 
3. We'll use two foam buffing pads, and this red one is the more aggressive of the two. It's made by Meguiar's and has a Velcro backing pad so it can be used in a variety of applications. |
4. A common 31/48" electric drill works great as a buffer for smaller panels like this. A standard Velcro backing plate, available at many home improvement and paint stores, allows us to use the Meguiar's foam pads with the drill. | 
5. Good wet sanding paper is a must, and Meguiar's makes some of the best. This 2,000-grit sandpaper removes surface imperfections but still leaves the surface smooth enough to easily buff out. | 
6. The first step is to prepare your sandpaper. Using 3M's Super 77 spray glue, stick two pieces of the 2,000-grit paper back to back. |
7. Attach the pieces together evenly, without any wrinkles or creases. These creases will scratch the surface of the paint and make buffing difficult. | 
8. Cut the large pieces into 3" x 3" squares and round the edges off as shown. Leaving sharp edges can gouge the paint, again making buffing harder. | 
9. Fill a small container half way with water and add a few drops of dishwashing soap for lubrication. Then, soak your sandpaper in this solution for a few minutes. |