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Doc. 202.] 587
INLAYING MARBLE.
which has been sifted through a coarser sieve is mixed with
boiled lime water, and with this mixture the excavations in
the marble are filled up to the very top. Over every design
which has been filled up a piece of linen is laid, which is
smoothed over with the hand, so that the portion filled in
may be of an even surface with the marble-slab itself. The
lime-water which is used ought to be well prepared, because
the greater the lime contained in it, the more quickly the
mixture will dry, and the harder it will become.
The ground which has been thus prepared by means of
the coarser powder, serves as a basis for the work which is
executed upon it by means of the finer powder; for the whole
of this ground is again cut out. At first this ground is smoothed
perfectly even with the horizon of the table. By means of
the edge of a knife a portion of it is scraped off, and after
wards it is polished with pumice-stone and sepia (ossa sepia,
the bone of a fish used in polishing). After the polishing it
is sponged evenly with water, and then the drawing of the
objects which are to be inlaid is made upon it. For instance,
if a playing-card is to be inlaid, an actual card is taken and
all its figures are pricked out with a needle; it is then laid
upon the prepared surface, and pulverized red lead strewed
over it; this powder falls through the holes and describes an
outline of the figures on the card, which are afterwards finished
with a lead-pencil, the size of the card and its sides being
at the same time carefully marked. Several cards, if the pre
pared surface admits, may be traced out, if desired.
After the drawing has been finished, it is carved out of
the white surface with small tools, one piece after another,
as required by the drawing or the figures, and the parts
removed are filled in afterwards with a composition consisting
of the finer white powder and the requisite colours. This
composition is kneaded in the hand like dough by means of
a little spatula or trowel, being likewise moistened for this
purpose with lime-water, which is more or less diluted with
water, one twentieth part more or less, according as the com
position is desired more or less hard. This little spatula or
trowel is also especially useful in depositing the composition
in its place, and in spreading it out and pressing it down.
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