Small Car Body Painting Repair
If it is essential to have an impeccable body, it is not only for the sake of aesthetics. A jet of gravel that grabs your car can split the layers of paint and then leave water and various corrosive agents (eg salt snow) to infiltrate and attack the sheet. After a month or two, the paint will begin to form blisters and all damaged parts will have to be removed, otherwise the rust will extend indefinitely, requiring painting of the entire bodywork (occasion, moreover, of the debosseler ).
Dentoring and repainting a body is a job that often frightens the beginner, but requires more care and patience than experience or skill. The main thing is to not neglect the work of preparation and to choose carefully its aerosol paint.
Find the original colors of a car
Paint manufacturers offer manufacturers a very wide range of colors and often a variety of shades for a single color. It is obvious that your retailer does not always have such an extensive choice in aerosol paints. However, the range is so varied that you can find the original color of your body. In France, for example, the Auto / ac, Auto F, Corona, Nitrolac, Berger, Valentine, Dup / ico / gold, Ascot, A / tona ranges offer all common shades.
In case of doubt, please note that all cars carry a small metal plate – usually attached under the hood – indicating the original colors (this information is sometimes worn under the spare wheel compartment).
Incompatibilities of car paints
Most bomb paintings are cellulosic paints. They apply to any original paint, as well as to bodies repainted with cellulosic or acrylic paint, but not on synthetic paint. If you have a synthetic paint, it is advisable to apply a layer of insulation (unfortunately non-existent in aerosol) before painting, otherwise the paint will look “pleated”.
To paint a car: a well-ventilated room
An aerosol can sprays a much larger area than the one to be painted. It is therefore essential to protect the parts which are not to be repainted and to place the car in a sufficiently isolated and clear place – away from other cars, for example. The lightest breeze, the slightest current of air, can carry the paint mists far enough away.
Leave your garage door or window open. Indeed, even if an aerosol contains too few solvents to evaporate these are frankly harmful, it is not recommended to do this work in a poorly ventilated room.
Types of car paint
Cellulose paint, rarely used today, was used on almost all cars built between the 1920s and the end of the 1960s. However, some brands of prestige cars continue to use it because of its superb appearance.
This paint is applied to the pistol, highly diluted (100%). A very large number of layers must be applied since it covers very little (10 to 15 layers). It has the advantage of drying very quickly. Once dry, it should be polished with an abrasive paste, then polished with a special liquid. These disadvantages being largely compensated by a brilliance of incomparable depth and a perfectly smooth surface. Moreover, if it is regularly maintained by periodic glazing with a suitable product and material, it has an almost unlimited lifetime.
However, the relatively high price of these paintings caused them to be supplanted by glycerophthalic paints , much less expensive and easier to use. These cover very well (a layer of glycerophthalic gives approximately the same thickness as four layers of cellulosic) and allow an instant gloss (they need not be polished or polished). They are therefore widely used for mass production cars.
Its disadvantages are a slightly irregular surface (orange peel) and a shallower shine than that of cellulosics. They also tend to oxidize quite rapidly (which explains, in many cases, the longevity of today’s paints).
Acrylic paints, of fairly recent use, are used for high-end cars, because of an aspect that brings them closer to cellulosics. Some polish like these while others mix with a hardener and give a direct shine. Still others apply in two colors for metallic colors: a layer of matt metallic color and one of glossy varnish. This paint has the advantage of not being oxidized and therefore better resistant to corrosion.
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