is a three step process,
like any recipe, you have to add your own little secrets and the quality of the
result depends on your experience... and luck.
to clean the blade:
hilt is removed from the blade
remove the oil, soak the blade into sour coconut juice and brush it with
a solution of klerak (Sapindus rarak DC), a local fruit. A mild detergent
with warm water is also
efficient but less exotic. If it is protected with wax, ethanol will be more
remove the old arsenic and the rust, soak the blade into a solution of
lime juice until the blade is white and shiny. For those who do not have
limes, a solution of denatured alcohol with 10% citric acid will do the
the blade once a day and scrub it under running water with a tooth brush to remove the lime
solution. When it is clean, dry it in the open in the sun,
or with a hair drier. Most blades will come clear in a week, some might take
etch the blade. There are two processes:
a piece of warangan (raw orange arsenic, Realgar), pound it
until it becomes powder. Mix one tea spoon of this arsenic powder in 1 liter
solution of fresh lime and water.
Soak the blade in
the solution. Blades react differently, some may show a very nice pattern in a
few minutes, others will take hours or days. If the blade has been soaked for
several hours in the arsenic bath, it might be necessary to rinse it with a
lime solution to remove the excess of arsenic.
the arsenic powder (or liquid) with a few drops of lime, progressively
add more lime to produce a solution to fill a third of an egg cup. Let
the solution sit for 30mn.
a soft brush in the solution and then rub the brush on the blade.
Repeat until the blade darkens. Once you get the color you want, rinse
under running water. Older blades will tend to be more gray rather
prevent further rusting, the blade is dried in the sun or with a
protect the blade:
with a brush a thin layer of minyak or micro crystalline wax. Minyak
is a mixture of several kind of oils, often based on sandalwood oil, to
flagrant and protect the blade. The blade is then dried in the open air.
warangan solution can be kept several years, you just need to add warangan
each time you use it. In fact, like good wine, it improves with time.