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Pinhole: Too little diluent is added, the viscosity is too large, the coating is too thick, the interval between layers is not enough, the standing time for the paint after diluting is not enough, and the diluent volatilizes too slowly.
Pelleting: The construction environment is unclean, the parts contain oil, water, dust, etc., the mixed impurities in the coating are not filtered, the brushing tools and containers are not clean, the paint is not fully mixed, and the filtering time and standing time are not enough.
Shrinkage hole: The bottom layer is unclean, the workpiece contains oil, water and dust, etc. The bottom layer is too smooth, the sanding is not enough, the construction temperature is too low or the humidity is too high.
Biting bottom: The primer and topcoat are not matched. The interval between layers is not enough. The bottom layer is not dried thoroughly. The diluent has too much dissolving power and the brushing is too thick.
Slow drying: Humidity is too high, the coating is too thick, improper use of thinner, and bad ventilation.
Whitening: Improper use of thinner, excessive volatilization, incorrect ratio, excessive humidity, high temperature, and thick coating.
Loss of light: The bottom is uneven, the surface of the white billet is rough, there is water in the paint, the thinner is added too much, the paint film is too thin, the drying is too fast, the temperature is too low, and the humidity is too high.
Matte is not dumb: Shaw has not fully stirred the bottom of the agent, the coating is too thick, the two intervals are too short.
Sagging: too much thinner, too much paint, the interval between layers is not enough, the surface is uneven, the shape is complex.
Orange peel: too little release agent, paint viscosity is too large, a brush is too thick or uneven paint, the ambient temperature is too high or too low, the wrong use of diluent (volatile too fast).
Cracking: The paint is too thick, the coating is too thick, the diluent is poor, and the ambient temperature is too high.
Cracking and shedding: The coating is too thick, the surface is not dry, the moisture content of the wood is high, the bottom layer is unclean, the sanding is not enough, the primer is not compatible with the top coat, the interval between layers is too short or too long
General paint construction is common
Foaming: high moisture content on the surface, high humidity, high temperature, poor backing of the putty, and insufficient interval between layers.