The basic way is to pouring liquid materials that is already
melted into molds and make various shapes. Other than metals,
plaster, clay, and glass also can be used. Metal materials were
gold, silver, copper, iron, lead, zinc, aluminum, stibium, and all
sorts of alloys.
The main material for metal types is bronze, and this is an alloy
of copper and tartar. in ancient times in Korea, a bronze alloy
used to be made by mixing copper, tartar, and zinc by the
proportion of 7:2:1, but the general proportion of bronze is
70%~95% of copper and 5%~30% of tartar. There are also some
impurities, nickel, zinc, and antimony, but the proportion of
these is less than 1%. To make a stronger metal than copper,
tartar is mixed. More tartar makes the metals broken easily and
whiter.
Our metal types were known to be made by using wax and molds.
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The process
of making metal types
