DOI Page / Citation link:
https://doi.org/10.11588/diglit.19574#0297
EN A 271
imitated, if you put four pounds of the principal powder into your
white glazed pot, and let it melt and purify ten or twelve hours
in the furnace ; afterwards call it into water, dry it, and put it
into the pot again, and let it be fully refined; then take fcales
of copper thrice calcined two ounces, fcales of iron, at the fmith's
forge on the anvil-block, forty-eight grains ; mix and reduce
them to an impalpable powder, and throw it, at three feveral
times and portions, into your pot of principal matter, ftirring the
metal very well, that it may be equally tinged by the mixture
of the colours : If it be to your fancy, and of a pleafant colour,
let it ftand a-while on the fire, until it be thoroughly incorpora-
ted ; thus take it off, and you will have a delicate green Ena-
mel, very proper for all forts of goldfmiths work.
Another green Enamel. The colour of this following is fome-
thing different from the former, but no lefs excellent. Take fix
pounds of principal powder, two ounces of feretto of Spain pre-
pared, forty-eight grains of crocus martis prepared with vine-
gar; make thefe into an impalpable powder, mix them well,
and put thefe into your white glazed pot; let it remain in the
furnace to melt and refine the matter; afterwards cafi; it into
water, and again into your pot, having refined it before, until
it refine very well; when it is melted, obferve whether the co-
lour be fatisfactory, and let it {land fome hours longer to refine,
and when it is taken ofF you will have a very fine green Enamel
for goldfmiths.
If the colour be too faint, add more tinging powder propor-
tionably enough to perfect it.
Another. There is another way to make green Enamel, af-
ter this manner : Put into a white glazed earthen pot four pounds
of principal powder, and let it refine in the furnace a little while ;
caft the metal afterwards into water, and, being dried, again in-
to the pot; then add, at three equal portions, this powder, com-
pounded of fcales of copper thrice calcined two ounces, and of
crocus martis. prepared writh vinegar, forty-eight grains; let thefe
be well mixed and powdered together, fHrring the metal with
the iron hook to incorporate it; let it remain on the fire until
it be well refined, and, when it is perfectly coloured to fatif-
faclion, take it off and keep it for ufe.
To make black Enamel. It is moft necefTary in this art, and
can leaft of all be fpared ; becaufe it has a peculiar beauty which
fets it ofF among the more fplendid and fparkling pieces. You
may make a very good velvet colour with four pounds of the
principal powder, two ounces of prepared zafFer, and two ounces
of manganefe of Piedmont, prepared as before directed ; mix and
pulverife them very well together, and put them into a glazed
earthen pot in the furnace for fome hours; the pot muff be more
3 than
imitated, if you put four pounds of the principal powder into your
white glazed pot, and let it melt and purify ten or twelve hours
in the furnace ; afterwards call it into water, dry it, and put it
into the pot again, and let it be fully refined; then take fcales
of copper thrice calcined two ounces, fcales of iron, at the fmith's
forge on the anvil-block, forty-eight grains ; mix and reduce
them to an impalpable powder, and throw it, at three feveral
times and portions, into your pot of principal matter, ftirring the
metal very well, that it may be equally tinged by the mixture
of the colours : If it be to your fancy, and of a pleafant colour,
let it ftand a-while on the fire, until it be thoroughly incorpora-
ted ; thus take it off, and you will have a delicate green Ena-
mel, very proper for all forts of goldfmiths work.
Another green Enamel. The colour of this following is fome-
thing different from the former, but no lefs excellent. Take fix
pounds of principal powder, two ounces of feretto of Spain pre-
pared, forty-eight grains of crocus martis prepared with vine-
gar; make thefe into an impalpable powder, mix them well,
and put thefe into your white glazed pot; let it remain in the
furnace to melt and refine the matter; afterwards cafi; it into
water, and again into your pot, having refined it before, until
it refine very well; when it is melted, obferve whether the co-
lour be fatisfactory, and let it {land fome hours longer to refine,
and when it is taken ofF you will have a very fine green Enamel
for goldfmiths.
If the colour be too faint, add more tinging powder propor-
tionably enough to perfect it.
Another. There is another way to make green Enamel, af-
ter this manner : Put into a white glazed earthen pot four pounds
of principal powder, and let it refine in the furnace a little while ;
caft the metal afterwards into water, and, being dried, again in-
to the pot; then add, at three equal portions, this powder, com-
pounded of fcales of copper thrice calcined two ounces, and of
crocus martis. prepared writh vinegar, forty-eight grains; let thefe
be well mixed and powdered together, fHrring the metal with
the iron hook to incorporate it; let it remain on the fire until
it be well refined, and, when it is perfectly coloured to fatif-
faclion, take it off and keep it for ufe.
To make black Enamel. It is moft necefTary in this art, and
can leaft of all be fpared ; becaufe it has a peculiar beauty which
fets it ofF among the more fplendid and fparkling pieces. You
may make a very good velvet colour with four pounds of the
principal powder, two ounces of prepared zafFer, and two ounces
of manganefe of Piedmont, prepared as before directed ; mix and
pulverife them very well together, and put them into a glazed
earthen pot in the furnace for fome hours; the pot muff be more
3 than