| Features |
Causes |
Controlling
Measures |
| On
the low-lying part of coated surface, there appear sags and
uneven film, which forms the tear-like marks and even curtain-like
ones. |
The
viscosity of the paint is too low and film too thick |
Take reasonable
control of the viscosity of the paint and the thickness of
the film |
| The
high temperature in the working place and slow drying time
of the paint cause the film to run. |
Ensure
good ventilation and choose the fast-dry paints |
| The
nozzle of airbrush has been opened too widely |
Adjust
the span of the airbrush nozzle |
| The
coated surface is so uneven as to accumulate too much paint
in its low-lying area |
Polish
the surface as smooth as possible |
| The
pressure from the air compressor is not stable and the distance
between the airbrush and the coated surface not consistent. |
Adjust
the air pressure to 0.4~0.6 MPQ |
|
Due to the fast/slow-volatized solvent used |
Use
the matching solvent to different paints, make sure the volatizing
speed matches with the drying time of the paint |
| The
paint is of too viscosity and the solvent volatizes too fast |
Adjust
the viscosity of the paint with matching solvent |
