Brake drum appears Nick how to do?

Brake drum appears Nick how to do?
The first step, check the scar, such as no injury to the inner wheel hub, can be easily repaired, use paint thinner, wipe around the scar, remove dirt;
The second step, scratch the deepest part of it is difficult to remove dirt, then toothpick can be used to thoroughly clean it;
The 3rd step: in order to prevent the part that has nothing to do by mistake besmear on paint, had better stick adhesive paper carefully in the periphery of scar;
The 4th pace, had arranged brush tip, besmear goes up to decorate lacquer, lacquer is dry hind a little contractive, had better besmear is a little bit protruding a few;
Step 5. After painting, it will take about a week to dry completely. After drying with water resistant paper dipped in soapy water daub, make the surface smooth;
Step 6, after wiping with water-resistant paper, rub out the shine with the mixture before waxing.