Universitätsbibliothek HeidelbergUniversitätsbibliothek Heidelberg
Metadaten

Barrow, John [Editor]
Dictionarium Polygraphicum: Or, The Whole Body of Arts Regularly Digested: Illustrated with Fifty-six Copper-Plates. In Two Volumes (Band 1) — London, 1758

DOI Page / Citation link:
https://doi.org/10.11588/diglit.19574#0320
Overview
Facsimile
0.5
1 cm
facsimile
Scroll
OCR fulltext
E N G 293

3. Then drop a few .drops of olive oil upon the plate, and bur-
nifti it with your burnifliing iron, and afterwards rub it well
with the end of a piece of charcoal, made of beech-wood and
quenched in urine, dipped in water.

4. With a roller made with black felt, caftor, or bever hat,
dipped in olive oil, rub it well for an hour or more, and your
plate will be fufficiently polifhed.

Of the maitner of folding the graver. I. It will be proper to
cut off that part of the knob of the handle of the graver, which
is upon the fame line with the edge of the graver; by this means,
making the lower fide that is held next to the plate flat, that if
may not be any interruption in the graving. See plate XIV. fig.
3> 4> 5« 6. _

2. For, if you work upon a large plate, if that part of the
handle of the graver be not cut away, it will fo reft upon the cop-
per, that it will interrupt the fmooth and even motion of your
hand in making the ftrokes ; and will caufe the graver to run into
the copper deeper than it ought to do.

3. Place the knob at the end of the handle of your Graver
in the hollow of your hand, and having extended your fore-finger
towards the point of the graver, laying it at the top or oppoiite
to the edge, which is to cut the plate ; place your thumb on the
one fide the graver, and your other fingers on the other fide, fo
as that you may guide the graver flat and parallel with the plate.

4. Take care that your fingers interpofe not between the plate
and the graver, for they will be an hindrance in carrying your
graver level with the plate, and make the lines more deep, grofs,
and rugged than you would have them.

Of the way and manner cf Engraving, i. Having, as has
been faid before, a cufhion filled with find about nine or ten
inches diameter, and three or four inches thick, and a plate well
polifhed, lay the plate upon the cufhion, being placed on a firm
bench or table. See plate XI,r. fig. 6.

2. Holding the graver, as before directed, in making frraight
ftrokes, take care to hold the plate firm upon the cufhion ; move
your hand, leaning lightly, where the ftroke mould be fine, and
heavier where the ftroke ihould be broader.

3. In making crooked or circular ftrokes, hold the hand and
graver ftedfaft, your arm and elbow refting upon the table, and
move the plate againft the graver; for otherwife it is impoftible
to make thofe crooked or winding ftrokes with that command
and neatnefs that you mould do.

4. Take care to carry your hand with fuch a flight, that the
ftroke may end as finely as it began ; and, if there be occafion to
thicken and make one part deeper or blacker than another, it
foould be done by degrees; and, that you may do it with the

U 3 greater
 
Annotationen