Car Scratch Repair MethodsPosted 10 months ago / on Car Maintenance, Car Repair, Car Trouble Diagnosis / by kabir901 / No Comment
When you are in the car, you may worry about the extra scratches on the body for no reason. Here we use this term to understand how to repair scratches on the body.
Preparation for repairing scratches
We need to prepare the equipment:
In order to repair various scratches on the body, we must use the following supplies and tools. These include: scratch wax, mini spray irrigation, scratch repair, paint pens, thinners, scratch abrasives, sponges, cloths, tapes, and various roughness sandpaper.
Our experiment subject:
Our subject was a rear bumper removed from the accident car. Where the undamaged paint on it will be enough for us to demonstrate the repair process.
Slight scratch and slender scratch repair
Slight scratch repair:
After the vehicle has been used for a while, the body will become dull. One of the reasons is that the paint is covered with small scratches. Small scratches are mostly caused by debris (such as leaves, pebbles, asphalt chips, etc.) hitting the paint surface; and the car wash method is not correct (the wiper cloth is not clean, the gun pressure is too high). It can also cause scratches on the painted surface. Now let’s see how to use scratch wax to quickly remove these tiny scratches.
First of all, we squeeze the right amount of trace wax on the sponge according to the area of the paint to be treated.
Then, in the scratches, wipe with a sponge decontaminated with wax repeatedly until the scratches are removed.
After waiting for the trace wax on the paint to dry, we can remove the remaining scratch wax with a soft cloth.
Car owners combat:
Some car owner personally tried to use scratch wax to remove small scratches in the specified area on the bumper. He said that, this kind of scratch wax is good for fine scratches, and slightly larger scratches are powerless.
Repair of slender scratches:
For thin, long and deep scratches caused by sharps such as blades, we need to use a paint thinner to dilute the paint and use a small brush to paint the scratches for quick scratch repair.
Pour some of the paint from the touch up pen into a small plastic spoon, then dilute the paint with thinner to make it easier to penetrate into the crevice of the scratch.
After deploying the paint, use a small brush to fill the paint in the gap. Because the paint is diluted, it easily penetrates into the crevices of the scratches.
After the paint is completely dry, you can use the No. 2000 sandpaper to grind the scratched area. Polish the scratched area and polish it again.
Car owners opinion:
Some car owner express that, the use of a brush to fill dilute paint into the scratches is difficult and the repair effect is general. If the scratches are slightly thicker, there will still be grooves in the painted finish. Finally, you need to wax and polish yourself, which takes time and effort.
His personal experience: The paint used to make up the paint is diluted so that it has a weak ability to fill scratches. If the scratches are thick, you will still see scratches in the shape of the pits after the repair. When using this method to repair scratches, the most important thing is to dilute the paint. The amount of diluent is very important. Secondly, it must wait for the paint to dry before polishing. When sanding, sandpaper No. 2000 should be used for water-milling to improve the flatness of the repaired paint.
Severe scratch repair:
After the car paint is rubbed by stones and other uneven hard objects, serious scratches are formed. Most of these scratches hurt the primer and appear white. Wider and deeper scratches must be repaired with patching and painting tools. Here we take a look at how serious scratches should be repaired.
First, we used 320-grit sandpaper to grind the scratched area. Smooth the burrs on the scratches and the raised paint.
Clean the polished area a little, then use a scratch pad to fill in the dent created by the scratch. Every time you fill up the soil, you must wait for a layer of dry earth and then dry it. Usually you need to fill 2-3 layers of soil.
After the soil is dry, first use 600-grit sandpaper to grind the soil-filled area and grind it until the filling area is roughly flat. Use a flat block of wood on the back of the sandpaper when sanding.
Once again, the water is milled on the soil, but sandpaper No. 2000 is used, mainly to make the repaired area more smooth and smooth.
During the grinding process, it is necessary to feel from time to time whether the filling area is smooth and whether the edge has been ground flush with the area next to it. When finishing grinding, you shouldn’t feel the edge of the filling soil undulating.
Before using the paint pen, shake the paint pen 20-30 to make the paint mix evenly. Unscrew the cover of the paint pen and insert the spray can into the paint pen jar. Finally, the paint pen body can be screwed onto the corresponding thread of the spray can
Clean the area to be painted with a cloth to start painting. In the painting area, in addition to the soil filling area, there are also areas that have been ground around the soil. At least 3-4 spray paintings are required.
After the painting is completed, spray paint on the spray paint area to provide the “splash oil” can make the touch up area and the original car paint more natural.
After the paint is completely dry, you can use sandpaper No. 2000 to sand the painted area until the polished area becomes smooth. At the end, the area where the paint is repaired is waxed and polished.
Personal experience: Since the paint was not dry enough, it was sprayed. Therefore, the shrinkage phenomenon finally appeared, and the depression appeared after the scratch was repaired. The flatness of the paint after waxing is not high, which is the result of careful polishing of the paint area without using No. 2000 sandpaper before final waxing.
For the determination of whether the fill soil was dry, we asked a painter. The painter usually presses the filled patch of soil with his fingers. If the fingerprint appears on the surface of the patch, no matter how light it is, the patch does not dry out. Generally in the scratch area, the soil is thicker and harder to dry.
Whether the paint is dry or not is based on the feel of the paint. The unpainted paint is gel-like, soft in texture and soft to the touch, while the dried paint is solid and hard.
The key to the perfect repair of paint scratches is that users must have strong patience. Each part must not be hasty. It is necessary to wait until each layer of soil or paint is dry to make a second layer. The flatness and roughness of the surface and strive for perfection.
This article describes the method of repairing scratches on the body paint surface and discusses its practical significance. If you have good enough hands-on ability and patience, have a strong DIY spirit, and do not purchase any scratches, then when your car has more serious paint scratches you can choose to repair yourself. It the repair failed. Repairing the paint is required at the repair point then it was only a loss of few $ for the purchase of the paint pen set. If the scratch was repaired flawlessly, it would save at least some $.
Look on the article to get more help about car scratch removing tips