How to use the flying dust technique to deal with the transition of picture?
Melt the powder into a paste. Then put the plate in a nitric acid solution. Where not glued acid powder were formation of corrosion pits, removing acid powder, ink printing, a piece of black white grey. The corrosion time is long, the grey is deep, and on the contrary, the corrosion time of each part of the picture is controlled by the anticorrosive paint, so that many levels of grey can be obtained. For acid powder point layout on the thickness and density, the change is more rich and colorful picture. Another useful a special box of dust, dust, or in a closed box with built-in acid powder, shake the fan after the powder dust, and then in, powder evenly on the page, according to the thickness of removed. This method can make the dust fine and uniform, but not according to the needs of the picture to arrange the density and thickness of each part of the idea.
A method of plate making of copper. The acid resistant materials such as asphalt, rosin powder, served in a small bag, or on the small screen in the layout of wire tapping, the above powder evenly falls on the page, and the version of heating copper engraving
Fly dust, dust corrosion, used to produce a variety of shades of gray surface. A dust box must be made first. A hand fan is installed in the box, and then the polished copper plate is put in the box. The storage box has a lot of loose powder, when the closed box mouth shaking fan, then in the case of rosin powder dust, slowly and evenly falls on the page. The author thinks that the appropriate time, will sprinkle the full colophong powder coated on the furnace to bake out. After heat, colophong powder melt and coalesce into numerous small, cooled and condensed into a layer of film. The coated film with rosin film is immersed in nitric acid, and when it is corroded, it is printed out as a gray of spots. Gray shades, see the film thickness and the thickness of the loose powder and corrosion time. The author uses his artistic conception to deal with the flying dust to obtain the desired effect.
