After the initial surface preparation, Andrews sends the parts for polishing to Derek Stankovich at Distinctive Metal Polishing. Upon their return from Distinctive, the parts receive a solvent bath and another prebake. Then the polished portions of the part, and any other sections that should not be powder coated (such as the piston holes in the calipers), are carefully masked with high-temperature-resistant tape. The masked parts make their way to the paint booth where they are hung on electrically grounded racks. The powder is given a 30,000- to 90,000-volt charge and is sprayed onto the part, where it adheres to material much as dust clings to a TV screen. One advantage of powder coating over painting is that if the person applying the powder is not happy with the thickness or look of the powder, he can brush or blow it off with compressed air and reapply. Also, areas of the part that are too time-consuming to mask may simply be wiped off with a finger. However, unlike liquid paints, powder-coated candy colors, such as the candy blue used on our Valkyrie's wheels and calipers, require multiple coats of powder. Candy colors require that a layer of silver be baked on before a translucent color is applied over the silver, making candy colors cost more than plain colors. Andrews says high-end powder coaters will always wait for the parts to cool down to the ambient temperature before the second color's application. Spraying the powder on hot parts results in uneven coverage and an inferior finish.