Dyes and dyeingPellew, Charles E. (Charles Ernest), Viscount Exmouth
Science
Dyes and dyeing
Pellew, Charles E. (Charles Ernest), Viscount Exmouth
Dyes and dyeing
The genuine Javanese tjanting (see Fig. 23) is a little bit of a
tool, holding only about 15 or 20 cubic centimeters of wax, made of
very thin hammered copper, and fastened into a little bamboo handle,
some four or five inches long. At the lowest part of the cup, which
is drawn out at that point into a spout, is fastened the delivery
tube, which is of _exceedingly_ small calibre, what chemists would
call, in fact, a “capillary” tube. It will be noticed that the wooden
handle extends forward, under the bowl, making it impossible to heat
the bowl itself, or melt the wax in it, by a direct flame.
The wax is melted in a separate pot or large cup, and kept at a high
temperature throughout; and the operator scoops out the wax from this
pot with the bowl of the tjanting, wipes off the drip with a rag, and
then proceeds to draw on the cloth. In Java, or wherever the cloth is
kept upright, by hanging from a frame, the drip from the outside of
the cup and the end of the handle is not so important, for it will
fall in front of the cloth. When, however, the cloth is laid flat,
for drawing, it is of the utmost importance to avoid all unnecessary
dripping, and so it is probably advisable to ladle the wax from the
pot into the tjanting, with a small casserole or ladle, rather than
to dip it out directly.
Now, if the size of the delivery hole is right, and the wax is
neither too hot nor too cold, it will form a little globule on the
end of the tube, and stay there; and when this drop is wiped off and
the tube at once applied to the cloth or other material, the wax
will flow out in a fine thin stream, as long as it is drawn along
in contact with the cloth, and when lifted up it will stop flowing
until again applied to it. If the wax is too hot, so that it runs too
freely, it is easy to cool it to the proper temperature by blowing on
it. If it is too cool, so that it begins to chill in the tube, and
to flow slowly and unevenly, it must be warmed by being again dipped
into the hot wax for a new supply. Great pains must be taken to
have the wax free from dust or grit, or else the delivery tube will
be constantly stopping up. A fine but stiff bristle or a very thin
whisk of broom corn should be always on hand for cleaning the tube.
And after using the tjanting pains must be taken to clean out all
the wax thoroughly before laying it aside, so that the tube will be
clear for the melted wax, when it is next filled. The whole tjanting,
tube and cup, should be gently warmed before filling, for fear of
the wax chilling in the capillary tube before it can be applied. But
the arrangement of the handle is such as to call for the use of an
outside melting pot for the wax, while the small size of the cup is
evidently so that the melted wax can be all poured out before it has
time to chill.
Public-domain text, read in full here on John Shaqi.
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