|
Engineering Art: Chinese Metal Crafts
In Beijing, most hotel shops and tourist stores sell cloisonn¨¦
articles, which can be as big as sacrificial utensils, screens, tables and
chairs, or as small as chopsticks, earrings, candy boxes, toothpicks and smoking
paraphernalia. They are works of art with a practical value. Recently,
handicraftsmen have developed a multi-coloring technique to make
cloisonn¨¦ , which has resulted in more refined and gorgeous products.
** The process
As one of the famous arts and crafts of Beijing, cloisonn¨¦ is a form
of famous traditional enamelware with a history of over 500 years. The making of
cloisonn¨¦ involves an elaborate and complex process, which includes
base-hammering, copper-strip inlays, soldering, enamel filling, enamel firing,
polishing and gilding.
Base hammering is the first step in the making of cloisonn¨¦. The
material used for the body is copper because copper is very malleable and
ductile. This step requires sound judgment in the shaping and uniformity of
thickness and weight. It is, in fact, much like the work of a coppersmith. The
only difference is that when an article is shaped, the coppersmith's work is
finished, whereas the cloisonn¨¦ craftsman's work has just begun.
The second step is filigree soldering. This step requires
great care and high creativity. The artisan pastes copper strips to the body
that are 1/16 of an inch in diameter and a desired length chosen by the artisan,
making up a complex but complete pattern. The artisan creates a blueprint in his
or her mind and makes full use of his/her experience, imagination and aesthetic
perspective in setting the copper strips on the body.
The third step is applying color, which is known as enamel filling. The color
is like the glaze on ceramics
and is called "enamel". Its basic elements are boric acid, saltpeter and
alkaline. Due to the differences in the added minerals, the colors differ
accordingly. Usually, iron will turn gray; uranium, yellow; chromium, green;
zinc, white; bronze, blue; and gold or iodine, red. The colors are ground into
powder and deposited into the cells separated by filigree.
The fourth step is enamel firing, which is achieved by putting the article
with its enamel filling into a kiln. Soon after, the copper body turns red, but
after firing, the enamel in the little compartments will sag slightly, which
will require re-filling. This process will go on repeatedly until the little
cells are full.
|
|