Glass Painting

Glass painting adds more value to the glassware, as well as its rejuvenation particularly for the used ones. Many types of design are applicable on the glass based on ones taste and sometimes requirement. The painting methods and techniques differ based on each usage of painting tools and its paints type. Some paintings are executed on finished products, but some are applied during their production. The process stages for the painting on pre and post production are different.
For the pre-production painting, certain paints are injected on the plunger which already has certain design on it. After the glob is inserted into this plunger and pressed against it, the design will stay on it as well as its paint. The glass particle must be included in this paint in order to coherent the paint with the glass material. Before the annealing process, the glass is coated by applying tin oxide and stannic-chloride. This process is to protect its paint and the form of its design, then let the glass to slowly reduce its temperature. After it is completely cool, re-coat the glass for its maximum preservation.
Second is the post-production painting. There are four types of glass painting at this stage, which are vinegar-trace, silver-stain, oil-based, and matt-paint.
Vinegar-trace paint completely covers the applied area by mixing the specific paint with vinegar, Arabic glue, and water. The common purpose of applying this vinegar-trace is to create figure or line. The implementation of this method of paint must be on a wet glass surface, to enable necessary correction if required. Once the paint is dry, it is not possible to apply more paint because it tends to flake when heating inside a kiln. The accurate application of paint is important in order to avoid any blot or quick dry. Upon drying, nick the paint using a fine shaft or a feather to obtain certain texture before it is finally heated at the temperature of 593C (1,100F) to create the shining impact on it.
Silver-stain brings out the bright colors of yellow, orange, and red with a hint of silver-nitrate stain by applying certain paint at the inner side of the glass. Different with vinegar-trace, the upside-down heating process of silver-stain at the temperature of 593C (1,100F) excretes a new accent of the glass itself not for drawing a line or figure. The longer it is under heating, its silver-stain gets darker.
Oil-based paint uses oil-turpentine base paint creates more color on the glass design. The application is fairly simple compared to the above techniques. However, the firing process sometimes results an uneven dry due to its inaccurate temperature arrangement.
The last is the matt-paint. The process of matt-paint is by including certain mixture of water with Arabic glue and water with vinegar. The second brush is possible to create a deep texture and rub it carefully. Due to its translucence character, this matt-paint is processed over trace-paint, to add a background and shadows using limited colors, such as blue, brown, green, and black.