How to sand a car before painting

auto spraying

You may have done some artistic creation before; like work of art a divider, painting wooden furnishings, or even your roof.

All things considered, amazing! It is a serious distinctive thing for you to paint a vehicle and that is the reason you need a bunch of rules on the most proficient method to sand a vehicle before painting. It is seemingly the most significant phase of the repainting procedure.

The primary thing you need is time; you have to make time for it. Concerning materials, you will require 1,200 – 2,000 coarseness wet-and-dry sandpaper, or an astounding sanding machine, scraped area safe film. You will likewise require grating circles on the off chance that you are utilizing a sanding machine.

So how about we rapidly move into the procedure appropriate:

What Is Sanding?

Simply put…
…Sanding is one of the most critical aspects of  types of automotive paints preparation for a car, and it helps to remove the top layer of a car’s paint with the use of abrasive materials.

It’s important to invest all the time to do it properly to get the best possible results. Sanding can be done with either an electric orbital sander (like the one here ) or sandpaper, depending on the job, and you’ll also need to use different paper grades depending on the task.

Things You’ll Need for Prepping and Painting Your Car:

Air compressor
Paint sprayer, automotive spraying (HVLP, LVLP, or airless)
Orbital sander with multiple-grade sanding pads
Hand sandpaper in grits from 120-800 for prep to finished sanding
Solvents (acetone/Eastwood Pre) for cleaning surfaces
Masking tape and paper
Body filler for repairs
Primer
Basecoat paint
Clearcoat
Paint thinner and catalyst or hardener
Respirator, eye protection

auto spraying

How to sand a car for paint? How long does it take to paint a car? How to paint a car hood? How to do bodywork on a car? How long should primer dry before painting?

 

 

1. Preparation of the Surface
Before you begin the sanding process, you should start by removing any obstacle, as they will only make the job harder. By obstacles, I mean any dust, grease, or road grime. Of course, this can be quickly done by washing the car.

Also take off any loose fittings on the car’s body or any attachments like the side mirrors, headlight covers, and the badges. In short, remove all that can be removed. Everything else should be masked with the abrasion-resistant film.

2. Fix the Dents and Scratches
The next thing to do is that you should take auto spraying of any visible dents or scratches (whether deep or just a slight one). If you are going to make use of a filter, be sure that you get excellent adhesion.

This can be done easily by cleaning the inner part of the dent, the scratch or the chip (if present), which creates a rough surface, of course with the use of the abrasive.

auto spraying

3. Get the Sanding Machine Ready
Now that the car’s exterior is all prepped up, you can now attach the coarse abrasive disc onto the sanding machine. You can use the P60 grade for the first sanding process.

Do not get carried away by the sound the sanding machine produces; there is a pattern you must follow. You should not just use it anyhow.

You should start by using a smooth circular motion to remove the clearcoat, the topcoat, and the base coat completely. When sanding using the smooth circular motion, do not stop and also do not move too fast.

For you to reach the corners of the car’s body parts correctly, you would have to sand with your hand using sandpaper (watch the video below). If the coarse attachment cutting is turning out to be too hard, change to a lower grade.

For you to get the best result, sand the entire body till you get a perfectly smooth surface for the primer to adhere to.

It will take more time if you are using sandpaper, but make sure that you sand the entire surface as smooth and even as you possibly can.

auto spraying

4. Change the Abrasive Disc
Once you sand to the point where you get to the primer, change the coarse disc you started with and switch to one with the more delicate surface.

The essence of this is to completely get rid of the scratches that must have resulted from the initial sanding with the coarse disc.

Ideally, you must get to the bare metal, so you should continue to remove the primer as much as possible.

5. Finish it up!
One of the importance and purpose of the whole sanding process does not only to make the surface of the car’s surface free from unwanted particles, but it is also to make the surface ready to have enough grip for the primer and the paint.

As a quick reminder, the best how to sand a car for paint is to remove the former paint and primer to get down the bare metal.

This will make ensure the finish is more even and provide a stronger and more durable adhesion when the new primer and paint are applied.

Finally, you are doing this indoors, make sure the floor is adequately swept, and there is enough space for you to work. Avoid any form of obstacles.

And if you are working outside, do it where there are not too many dust particles or other contaminants. And now, your car’s body is ready to get painted.

How to Apply Cutting Compound to Your Car
Before you start the process of applying a cutting compound, be sure to tape off surrounding areas, especially if you’re applying it with a machine. It can get all over the place, so work smart; wear old clothes or overalls, safety glasses, gloves and cover up anything you don’t want to have to clean afterward.

Using a clean cloth, apply the compound in a circular motion by hand. Larger areas might be a bit too big to do by yourself, so get an orbital polisher with the appropriate pads. Watch your pressure and be sure to pause every now and then to inspect the area you’ve just treated.

When you first start there’s a good deal of trial and error – so be patient and keep calm.
Always take care to move the compound around; spending too long in one area can heat up the paint and burn it, creating more damage.
Spraying water on the surface will cool the paint down and help to move the compound over the surface.

Watch the short video below for a better understanding of the process of sanding a car before painting:

Sanding A Car Before Painting | Conclusion

Why should you hire a professional who would charge you exorbitantly for a job that is cheap and easy to do? Painting a car is not as hard you may have thought.
If you wish to learn how to sand a car before painting, this post is the complete information you need to help you achieve your desired goal.

Getting the necessary materials will be more cost-effective for you than trying to get a professional. Give it a try now and see how much you could save in the long run.

Tagged: Tags

Leave a Reply

Your email address will not be published. Required fields are marked *