AVOID The Most Common Auto Body Mistakes That Newbies Make!

4,514 views · Published 13 December 2016 · 16:32 · Indexed 6 November 2026

Channel: LearnAutoBodyAndPaint · 2016 · Autos & Vehicles

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Number 1: Prepping. It is the most important part of body work. If you want to have a nice paint job, you need to make sure that your prep is really good. 

You need to make sure you prime over feathered areas. For example, you feathered out some of your clear coat into your base coat with 320-grit, you shouldn’t paint directly over that. 

You need to make sure you seal it then prime it. Block with 400-grit. That will come through to your base coat. You will actually see those spots through your base coat. Always prime over your body work, bondo areas, and over metal. 

Never paint single-stage enamel or base coat clear coat over a little metal spot even if it’s a little spot. Otherwise, those little areas will start biting which will give you paint problems. People don’t prime where they’re supposed to prime. 

Number 2: Not sanding with the correct sandpaper grits. I was speaking with my buddy, Jon Kosmoski of House of Kolor and I asked him what he uses to final sand with. He said he uses 400-grit, which is what I always use as well. 

Some people say they have to final sand with 800-grit or 600-grit. The problem with that is, you don’t have enough tooth in the sanded prepped area. 

400-grit is the perfect sandpaper grit to use for finishing over primers and even if you’re going over clear coat since you can also paint over clear coat directly. Clear coat is a great sealer foundation to base right on top of. You can base right over it if you want to. 

I recommend you sand and finish with 400-grit. You can end up with a lot of problems for anything finer than that. 

Some people finish with 1000-grit and they put base coat and clear coat right on top of it. When they go to a carwash which use the pressure washer for the wheel wells, they risk blowing your paint right off. Use a grit where your paint is going to stick to. 

Number 3: Orange peel is another common mistake. People sometimes complain about orange peel. There are a couple of reasons why you get orange peel. 

One is incorrect paint mixture. Make sure you read the instructions on the can and mix your paint correctly. 99% of the time when doing base coat clear coat, your ratio will be 50/50 or 1:1. If you have a pint of base, use a pint of reducer. 

It’s fine to have a little bit of orange peel on your base coat. That’s normal. When it dries, it usually levels out. However, if you notice too much orange peel on your base coat, add 10% of reducer in it. 

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