You will want to try and have 400, 800, 1,000, and 1,200 grit sandpaper. This is a good spread and will make clear coat removal that much more of a breeze. Be careful though any grit can potentially cause damage beyond the clear coat, but more on that later.Oct 2, 2020
Mask off the repair area using painter’s tape, applying about an inch outside the damaged area. Use an 800-grit sandpaper to sand down the rough clear coat until you can’t feel it anymore. Go lighter on the surrounding clear coat, as you are trying to smooth and blend the damaged area, not remove more clear coat.
600 grit wet is fine for recoating the clear, I’d stay away from the scuff pad if possible because the scratch it leaves isn’t as even as sandpaper. The overall job looks pretty good so a good cut and buff should produce a nice paint job.
Sanding between layers of clearcoat is also not recommended. Wet sanding and polishing the final layer will yield a better result than doing it between each coat. Clearcoat layers are also thinner than they look. … Even though it may feel dry to the touch it may be a little gummy and sanding it can ruin the job.
Dry sand using 180-grit sandpaper to remove rust or surface damage before moving on to a 320-grit paper to remove your previous 180-grit scratches. Whichever method that you decide, follow it up using 400- to 600-grit sandpaper to sand the paint to prep the existing paint surface for the new coatings to be applied.
Even if you are very swift with the use of lacquer thinner on car paint, it will eat through the clear coat. Though it may not occur right away, it will happen gradually.
If you plan on removing the varnish and then painting the wood, sanding can be an effective way to get rid of the varnish while prepping the wood at the same time. It’s also a natural and chemical-free way to remove varnish. … All you need to do is start with 150-grit sandpaper and sand the entire surface.
But I’m telling you, you would do well to paint over 400-600 grit if you’re painting base coat/clear coat, wet or dry. … All you have to do really is, scuff down the clear coat with 400-grit then you can lay your base coat and clear coat right on top of that. You don’t even have to put any primer on it.
For heavy sanding and stripping, you need coarse sandpaper measuring 40- to 60-grit; for smoothing surfaces and removing small imperfections, choose 80- to 120-grit sandpaper. For finishing surfaces smoothly, use a super fine sandpaper with 360- to 600-grit.
Common Sandpaper Grit Sizes
320 to 400 Grit Sandpaper: Very fine grit sandpaper is used for light sanding between coats of finish and to sand metal and other hard surfaces.
You can buff without sanding but you won’t remove much texture, it’s common in a collision shop to just denib any dirt spots by spot sanding then buff the panel to make the shine uniform.
You can sand for adhesion and spray a new coat of clear over the base, but it will never lock in, and it will always sit on top of the old clear at the edges. … The only option for a proper, permanent repair is to sand the whole car and respray color and clear.
If you want to put additional coats of clear, you need to give it two weeks to let it cure. Then, buff it with 800-grit and then put two more coats of clear so you’ll have a thicker clear coat, especially if you’re doing a candy paint job. … Basically, you need to put a base coat then put candy on top of it.
|Grit||How It’s Used|
|180 grit||A finer grit used to final sanding and feather edging body filler.|
|320 grit||For final polishing sanding before the primer coat. Also good on spot putty.|
|400 grit||Used for rough sanding primer. Also used for fine sanding spot putty.|
– Clear coat can be applied over existing clear coat, as long as it is good condition. … Urethane clears bond to the base coat while it is still drying. Spraying clear over base after more than 24 hours have passed is not recommended.
For a clear coat, you can just sand it and paint it right over it. You don’t have to prime it. We’ll be using a piece of sandpaper – 400 grit and the other one is super Assilex sandpaper by Kovax. It’s a Velcro pad but it’s very soft.
Wet-sand the base coat before starting the clear coat. Wet sanding makes the surfaces smoother. It is often a step in polishing cars and other items. If you wet-sand the base coat, wash the vehicle with soap and water after this step, not before.
An electric orbital sander is a great option for a beginner who needs a good tool to sand or polish their car. All you have to do is plug it in, and you’re good to go. Just keep in mind that the vibration that electric sanders give off can be unpleasant.
Mineral Spirits won’t harm clear coat and will remove just about anything. If that doesn’t work, go get a clay bar solution Meguiars sells one. Just be sure not to use a clay bar on a hot surface.
Having multiple grit sandpaper available will also help the process go smoother. You will want to try and have 400, 800, 1,000, and 1,200 grit sandpaper. This is a good spread and will make clear coat removal that much more of a breeze.
Wet sanding is the most aggressive form of paint correction and removes severe clear coat damage. Compound is used remove moderate clear coat damage, and hazing left behind by wet sanding.
Removing Varnish by Sanding
You would use medium sandpaper (150 grit) to remove the top layers of varnish and then as you get closer to the original surface you want to remove the varnish from you would use finer sandpaper (220 grit).
Removing old varnish and stain can give wood a fresh start. … If sanding is out of the question, you need to strip the wood instead. Stripping also is quick, it removes almost no wood, and there are a few methods from which to choose.
If you see any scratches larger than 320-400 scratches (if you can feel them with your hand or finger nail they’re too deep). As you apply your multiple coats of base coat and then clear coat you will see those very minor imperfections disappear so DON’T STRESS!!
2K is usually thought of as a “filler primer” that is sanded to help level the surface and take out slight imperfections. Epoxy primer is a “direct to metal” primer that can be a little gummy and not as good for block sanding.
Fine sandpapers range from 120- to 220-grit. … Extra fine sandpaper is often used between coats of paint or varnish. Grits of 240, 320 and 400 are termed very fine, while extra- or superfine sheets with grits of up to 600 are best-suited for polishing jobs.
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