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Cleaning files

Sometimes they are fattened & by means of the fat, the
lead, which is fatty in itself, or other filings, attach
to it. And you will be able to clean them either with hot
charcoal or a wire brush made of wires of
latten.


Carnation

It is molded like the rose, marigold, & all
other flowers, thus as is said, namely, whole-mold flowers, & all
the leaves, if you want, in two halves, joining them by solder
for a more assured way, even if you could mold them together in a closed
mold. I cast one that came out very well. But it is necessary
that the the sand be very thin & blown thoroughly.


Molds

Make the two sides so that they are, es if it is
possible, one as thickness as the other, in order that they
can be quite evenly reheated. When you mold some animal that should be
burned you, like crayfish, you cannot open it to
clean it & make the cast so that it is not reheated. And when they
are reheated one time, keep them scarcely at all without casting, for
they are rendered musty & moist, & the mold is undone
& loses its strength.



The part where the back of the animal is, is usually thicker.


Plaster alone

Reheated stone plasterfears is undone in
water, but that which is reheated & first
pulverized and then reheated does not fear it. But if it is good it
hardens in it, like the one of Paris &
Spain, which is hard with stone, as is that which
grows in lean & dry earth and which seems like white
salt. Germans make statues for their fountains
with it, which are not spoiled, especially once varnished, but it is
hardened in water. When it is alone & not mixed, it takes
hold more quickly than otherwise. One needs to oil very lightly
your molds that are of metal or stone, otherwise it will
not release. And however you oil, one needs to wet it with hot
water. And when it will have taken hold & is well cooled, one
needs to wet it sometimes in cold water, but if it refuses to
open, in hot water & sometimes in boiling water.



Sometimes one even needs to make the mold boil in hot
water, as when you have molded some wax that you fear would
not be easily released from it.

Cold water makes oil withdraw to the surface of the
plaster that has sucked it in, & thus it released.

