Do not scuff the base coat beforehand. These tips show you how the pros do it.
3m Wetordry 3 2 3 In X 9 In 400 Grit Sandpaper 5 Pack
Sanding primer before base coat. A good paint job is 90 percent prep work. For larger vehicles double those amounts. After some time with the 400 grit you can move to a 600 grit paper to give yourself a nice smooth surface to work with when you are painting the car. Do you want your old trim to look fresh smooth and crisp after youve painted it. The thickness of base and clear layers have greater impact on chip resistance than mechanical adhesion with the primer. Were now going to sand it all down with 400 grit get all the minor imperfections with glaze putty.
I like to wet sand for final painting so if youre sanding a 2k primer an epoxy or even a clear coated surface or maybe if you have a car with an already nice paint job on it say you have a red car with a nice paint job but youd like to put a different red hue on it or some kind of metallic maybeall 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. Yes sanding is required. Then reshoot those areas with primer. Now lets talk about wet sand dry sanding techniques when prepping for base coat painting. Once the base coat is smooth and clean start spraying on about three to four layers of clear coat. Ultimately the goal of the sanding if trying to get rid of raised grain should be a smooth wood finish.
Wet sand the base coat before starting the clear coat. It is often a step in polishing cars and other items. Theyre diy friendly so you can prep your trim yourself and still get professional looking results. Buy enough primer base coat and clear coat to cover your vehicle. Keep in mind these finishes are designed to fail by chipping to the primer layer preserving the substrate beneath. I spent 13 hours on this car to get it primed up finish all body work and ready for paint.
If you are looking for a better overall finish the smoother the better which can at times require sanding the wood with a primer on it with up to a 600 grit sand paper. If you wet sand the base coat wash the vehicle with soap and water after this step not before. As a starting point if you are sanding a coat of rough primer you can start with a 400 grit sandpaper to knock down all of those little bumps. Wet sanding makes the surfaces smoother. The old adage a good paint job. For a small to medium sized car youll need 1 gallon 38 l of primer 3 gallons 11 l of base coat and 2 to 3 gallons 76 to 114 l of clear coat.
Gallery of Sanding Primer Before Base Coat
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