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Touch-up paint with a brush on the scratch of a BMW Series 1 door.

Model: BMW Serie 1 F21, MK 2, F20 - Years: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Part: Body

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Video tutorial

What the video shows is exactly what NOT to do in a case like this: sanding directly on the scratch means removing the clear coat; the color has no protection or shine, and only a bump will come out. Sanding over it will end up damaging the nearby bodywork.

If we want to try with the brush kit, the sequence is as follows: we thoroughly degrease the entire area, then with a small piece of wet P2000 sandpaper wrapped around a toothpick, we sand only the bottom of the scratch to clean it and smooth the inner edges; then, using a very fine brush, we apply a first layer only in the scratch and let it dry for 1/2 hour; then a second layer and let it dry. We continue until the scratch is filled almost level, not above.

Now we use the clear coat from the kit, applying 2/3 layers over the colored area, slightly extending beyond the edges of the touch-up. We let it harden for at least 48 hours. With wet P3000 sandpaper, we sand very lightly over the excess clear coat, trying not to touch the original paint.

Then a layer of polishing paste.


Posted on 6 January 2026 by ScegliAuto


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