First, gets touch-up paint at your local car dealership using your vehicle’s VIN, which will cost roughly $15-20 for a tube of touch-up. Next, clean the rock chip with rubbing alcohol or another wax remover to ensure the best possible bond between the paint and the bare metal. While you let the chip air dry after cleaning, take out the paint bottle and give it a good shake for 10-15 seconds for even pigment distribution.
Then, unscrew the paint brush from the bottle, and disperse one drop into the reservoir of the fine painting pen. Close the paint bottle for now, and then lightly tap the pen to help the paint fall into the tube. You’ll notice the touch-up will not drip out of the tiny tube without it being placed in the chip during use. Next, fill the chip up with thin layers of paint, allowing each coat to dry for a few minutes before adding another if necessary. The goal is to fill the chip up slowly, and allow time for shrinkage as it dries.
Now that the chip is slightly overfull to allow for shrinkage, clean the pen by pouring rubbing alcohol in the reservoir and using the supplied pipe cleaner to push the alcohol through. This may need to be done a few times, especially if you’re changing colors from car to car. Although some paints are pre-mixed with clear coat type protection, if you decide to add it separately, repeat the same process, but add a clear coat to the remaining 20% of the chip, and slightly overfill it once again to allow for shrinkage.
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Once the paint chip is protected and fully cured overnight, be sure to add your favorite wax or sealant to help repel water and minimize the chances of seeing rust down the road. The size and depth of the chip will dictate the amount of paint used, and the time required for the job. But remember, this is considered a Band-Aid in hopes of protecting your paint from future rust. And, if done correctly, can also help hide those unsightly rock chips.