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Carroceria · página 529 de 566 · 501-36-67 · parte 4 de 4

Página 529 do Manual de Carroceria: Dicas e truques
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501-36-67 Paint - General Information 501-36-67 DESCRIPTION AND OPERATION color shade. Refer to the chapter Color Determination and Color Theory. ‡ When shading, if possible only use the paint mixture that is also allotted in the color shade formula. ‡ Observe the rules concerning contrary colors (complementary colors) and partner colors according to the Oswald color circle. ‡ Complementary colors are not recommended during shading because they mutually inhibit and lead to muddy mixtures. Sanding marks In certain circumstances, the recommended sanding methods up to now are no longer suitable for light metallic color shades. Wet sanding with grade P1200 paper or a grey sanding pad can cause sanding scratches which can become very visible under certain lights. In order to achieve an excellent paint result on difficult color shades, follow these working rules: ‡ Sand filler as before, rub down area to be painted with 3M ultra fine matting sponge and 3M matting gel. ‡ Sand filler as before, rub down area to be painted with soaked 3M wet sand paper P1500 - P2000. ‡ Sand filler as before, rub down area to be painted with 3M 260 L P1000 eccentric (Interface Pad). Improving touch-up work During application of special effect base paints, the effect particles align themselves exactly parallel to the surface in the paint layer while it is still liquid. This means a particular thickness of the paint layer is required. Because during painting the layer thickness in the transition zones reduces from normal to zero, the effect particles can no longer align themselves. This leads to lighter, darker or cloudy zones. If 1-component clear lacquer is sprayed before the base coat, this effect is prevented. An optically perfect transition will result.