DOI Page / Citation link:
https://doi.org/10.11588/diglit.19574#0311
E N A 285
The lefs ufe is made of this metal in this work the better, for
the Enamel never fticks to it perfectly, but is eafily fcaled, di-
vided, and broken off, which never happens to gold ; befides,
the copper is fo impure, that its fumes deftroy the beauty of
the Enamel fo much in the furnace, that they quite lofe their
charm and fplendor by the malignity of thofe vapours.
Though the copper receives eafily all thick or dark Enamels,
it cannot be brought fo well to endure the clear and limpid ; now,
if you would make ufe of thefe laft, you muft firft lay a lay of
green or black, and thereon a leaf of filver to receive the Ena-
mel fuitable for that metal mentioned before ; fo that in the main
it is much better to make ufe of filver for the tranfparent Ena-
mels, fince the copper is fo apt to foul, and the change in either
the fame.
In enameling on copper, you muff take a plate of red copper
forged fmooth and even, applying your Enamel of what colour
you defire above and under the plate as before; then put this into
the reverberatory furnace, and, when it receives its polifhing,
draw it out.
To prepare the Enamel for the metals. Before you apply
your Enamel on the metal, you muft give it this little preparation,
which is the eafieft, and beft approved of by the goldfmith. We
will inftance it in white Enamel, becaufe that is more generally
made ufe of than any other.
Take white Enamel, pulverife it very fine, pour on it a little
aqua-fortis, and let it afterwards purify and refine in a fmallglafs
cucurbit.
Wafh it afterwards often in fair water, dry and keep it in a
clofe veflel for ufe.
To make ufe of it, firft pound a quantity thereof in a ftone
mortar, wetting it with a little water, and fo fpread it on the
plates, and into the furnace with it as before.
Thus do with all your clear and tranfparent Enamels, and you
will have all your things in a readinefs to go on with your work
as you think convenient.
To prepare the colours for painting on Enamel. Nothing can
be more fpiendid than the paint on Enamel, and for this ufe muft"
be chofen the Iivelieft and moft noble colours, and fuch as will
eafily vitrify and melt.
All thefe before affigned are as equally fufficient for this, as
for enamelling; if you grind them firft on your marble with the
beft oil of fpike, or mix them together with the other ingredients
for that purpofe, as we fhall give a fuller account hereafter, and
of all the matters to be ufed with calcined Enamels, which ferve;
to make up the paint for Enamel, mixing them well together, as
painters do on their pallets. When you want fome colours of
Enamel,
The lefs ufe is made of this metal in this work the better, for
the Enamel never fticks to it perfectly, but is eafily fcaled, di-
vided, and broken off, which never happens to gold ; befides,
the copper is fo impure, that its fumes deftroy the beauty of
the Enamel fo much in the furnace, that they quite lofe their
charm and fplendor by the malignity of thofe vapours.
Though the copper receives eafily all thick or dark Enamels,
it cannot be brought fo well to endure the clear and limpid ; now,
if you would make ufe of thefe laft, you muft firft lay a lay of
green or black, and thereon a leaf of filver to receive the Ena-
mel fuitable for that metal mentioned before ; fo that in the main
it is much better to make ufe of filver for the tranfparent Ena-
mels, fince the copper is fo apt to foul, and the change in either
the fame.
In enameling on copper, you muff take a plate of red copper
forged fmooth and even, applying your Enamel of what colour
you defire above and under the plate as before; then put this into
the reverberatory furnace, and, when it receives its polifhing,
draw it out.
To prepare the Enamel for the metals. Before you apply
your Enamel on the metal, you muft give it this little preparation,
which is the eafieft, and beft approved of by the goldfmith. We
will inftance it in white Enamel, becaufe that is more generally
made ufe of than any other.
Take white Enamel, pulverife it very fine, pour on it a little
aqua-fortis, and let it afterwards purify and refine in a fmallglafs
cucurbit.
Wafh it afterwards often in fair water, dry and keep it in a
clofe veflel for ufe.
To make ufe of it, firft pound a quantity thereof in a ftone
mortar, wetting it with a little water, and fo fpread it on the
plates, and into the furnace with it as before.
Thus do with all your clear and tranfparent Enamels, and you
will have all your things in a readinefs to go on with your work
as you think convenient.
To prepare the colours for painting on Enamel. Nothing can
be more fpiendid than the paint on Enamel, and for this ufe muft"
be chofen the Iivelieft and moft noble colours, and fuch as will
eafily vitrify and melt.
All thefe before affigned are as equally fufficient for this, as
for enamelling; if you grind them firft on your marble with the
beft oil of fpike, or mix them together with the other ingredients
for that purpofe, as we fhall give a fuller account hereafter, and
of all the matters to be ufed with calcined Enamels, which ferve;
to make up the paint for Enamel, mixing them well together, as
painters do on their pallets. When you want fome colours of
Enamel,