skin left over from production per day is produced by
this village and if projected within 1 month there will
be 2.3 tons of leather material left over from
production. Therefore, the problem can be formulated
as follows. 1) It is necessary to develop the rest of the
wayang leather production material in the form of
exclusive products in the form of jewelery as a
medium of expression for urban society. 2)
Processing of existing puppet skin waste material is
done manually by craftsmen..
3 RESEARCH OBJECTIVE
In the future this research is expected by the authors
to be useful for, 1) As an alternative choice for
fashion products for the people who want to lift the
exclusivity of wayang leather waste products without
losing traditional and historical elements from
wayang kulit. 2) As an alternative method for
utilizing puppet skin waste for wayang waste leather
entrepreneurs in Indonesia. 3) As a form of culture
appreciation and increasing awareness of urban
people about the prestige value of wayang kulit in the
form of media expression that can be used daily.
4 LITERATURE STUDIES
Definition of Rawhide Material. Rawhide or raw
skin is the skin of native animals that have not gone
through the process of tanning or chemical processes.
Similar to parchment, it has a lighter color than the
skin through vegetable tanning. Before used, rawhide
skin is prepared by removing all feathers, meat, fat or
blood on the skin and then stretched and dried (UGM,
2012). The original character of raw leather is hard,
stiff, slightly patterned and translucent. But it can be
flexed through repeated bending and stretching
processes. If necessary, oil coating or lubrication can
be carried out on the surface of the skin to make it
waterproof. Raw leather material commonly used to
make puppets comes from cow skin, buffalo and goat.
Definition of Split Leather Material. Split skin
is the skin of a buffalo or cow that has gone through
a chemical process, then split using a splitter machine
into two or more parts. The split parts are nerf (grain
split), flesh split and middle split. The split skin
process can produce more sheets of skin, making the
price cheaper than raw skin (Susilawati, 1992). Split
skin has two sides, on average has a smooth surface
and on the other hand is more rough due to skin fibers
that are "split forcibly" during the splitting process.
Split skin has more flexible character than raw skin,
more translucent. This skin is more sensitive to
temperature, easily curved or rolled when exposed to
heat or humidity.
Definition of Jewelry. Jewelry, small jewelry and
goldsmith items, are used as decorative items that are
worn for personal jewelry both body and clothing.
Made of precious materials (precious metals: gold,
silver, platinum, gemstones, ivory) decorated with
various techniques and characterized by artistic
execution. Including indigenous ornaments, primitive
ornaments with colorful stones, horns, bones, and
others. Jewelry has been known in all historical
periods and in all cultures that define the social role
of jewelry along with a number of basic forms.
Initially it was a function of an object, especially that
used to decorate clothes such as pins, buckles and
pins (Clarke, 2010).
Coloring Technique and Leather Finishing.
Basically the wayang coloring technique uses white
wall paint mixed with color pigments and PVAC
glue. While the Gold coloring usually uses gold foil.
Varnish or neutral waterbase topcoat used for
finishing.
Laser Cutting. Laser (Light Amplification by
Stimulated Emission of Radiation) technology that
uses lasers to cut material and is usually applied to
manufacturing industries. Laser cutting works by
directing a high-power laser to cut material and use
the computer to direct it. Industrial laser cutting has
been designed to concentrate a high amount of energy
into a small place. Usually laser cutting rays are
around 0.003-0.006 inches in diameter when using a
laser with a short wavelength. Following are the types
of lasers and their uses, 1) Laser CO2
Used to cut, make boring, and carve. 2) Neodymium
(Nd). Used to make boring, it takes big energy with
low reps. 3) Laser Neodymium Yttrium-
Aluminum-Garnet (Nd-YAG). Very high power is
used to make boring and engrave.
Here are the capabilities of the laser cutting:
1) Marking. The laser beam damages the surface of
the material so that it leaves a mark in the form of a
scratch according to the pattern image designed.
2) Engraving. Plasma laser light scratches the surface
of the material with different depths so as to produce
carved shapes or images or motifs that match the
pattern images that are designed.
3) Perforating/Punching/Cutting. Plasma laser light is
used to hollow out material with the shape according
to the design pattern that is designed.