SALMON, William, Polygraphice, Or The Art of Drawing, Engraving, Etching, Limning, Painting, Washing, Varnishing, Colouring and Dying. In three Books. I. Shews the Drawing of Men, and other Animal Creatures, Landskips, Countries, and Figures of Various Forms. II. The way of Engraving, Etching and Limning, with all their Requisits and Ornaments. III. The way of Painting, Washing, Varnishing, Colouring, and Dying, according to the Method of the best Authors now Extant. Exemplified in the Painting of the Antients, Washing of Maps, Globes, or Pictures ; Dying of Cloth, Silks, Bones, Wood, Glass, Stones and Metals : together with the way of Varnishing thereof according to any Purpose or Intent. The Like never yet Extant. By W. S. a Lover of Art, London, E.T. and R.H., 1672.1 quotations
CHAP. VII. Of Etching, and the Materials thereof.
I. ETCHING is an Artificial Engraving of Brass or Copper Plates with Aqua fortis.
II. The Instruments of Etching (besides the Plate) are these nine. I. Hard Varnish. 2. Soft Varnish. 3. Prepared Oyl. 4. Aqua fortis. 5. Needles. 6. Oyl stone. 7. Brush-pensil. 8. Burnisher. 9. The Frame and Trough.
[...]. [...] VII. To make the Aqua fortis.
Take distilled White-wine Vinegar three pints ; [...]. [...] CHAP. X. Of using the Aqua fortis.
I. If there be any strokes which you would not have the Aqua fortis eat into ; or any places where the varnish is rubbed off, melt some prepared Oyl, and with a pensil, cover those places pretty thick.
[...]. [...] CHAP. XIV. Of Using the Aqua fortis, and finishing the work.
I. Put soft Wax (red or green) round the brims of the Plate, and let it be raised above the Varnish about half a Barly corns length ; [...].
BROWNE, Alexander, Ars Pictoria : or an Academy Treating of Drawing, Painting, Limning, Etching. To which are Added XXXI. Copper Plates, Expressing the Choicest, Nearest, and Most Exact Grounds and Rules of Symmetry. Collected out of the most Eminent Italian, German, and Netherland Authors. By Alexander Browne, Practitioner in the Art of Limning. The Second Edition, Corrected and Enlarged by the Author, London, Arthur Tooker - William Battersby, 1675.1 quotations
How to use the Aqua fortis on the Plate.
You must use single Aqua fortis. Take a quantity of Aqua fortis and pour it into a glass […] ; for in case the Aqua fortis work too strong, it will make the work very hard, and sometimes make the ground to break up ; […].
ANONYME, The Excellency of the Pen and Pencil, Exemplifying The Uses of them in the most Exquisite and Mysterious Arts of Drawing, Etching, Engraving, Limning, Painting in Oyl, Washing of Maps & Pictures. Also the way to Cleanse any Old Painting, and Preserve the Colours. Collected from the Writings of the ablest Masters both Ancient and Modern, as Albert Durer, P. Lomantius, and divers others. Furnished with divers Cuts in Copper, being Copied from the best Masters, and here inserted for Examples for the Learner to Practice by. A Work very useful for all Gentlemen, and other Ingenious Spirits, either Artificers or others, London, Dorman Newman, 1688.1 quotations
Chap. I, Of Etching with Aqua fortis.
There are several ways for Etching, and several Grounds of divers colours, used by several men. I shall deliver here onely one, and that so familiar, easie, and true, that I believe there is not a better Ground, nor a more accurate way performing the work intended, than that which shall be here taught ; it being the only way, so many years practised, and to this day continued by that unparallel’d designer and incomparable Etcher in Aqua fortis, Mr. Hollar ; the manner of performing the whole work is as followeth.
SECT. I. To make Mr. Hollar’s Ground, and how to Etch in Copper, and what Instruments ought to be used in the practice thereof.
Take three parts of Virgins Wax, one part of Asphaltum, one part of the best Mastick […] ; so is your Ground prepared.
SECT. II. How to prepare your Copper.
Your Copper must be well planisht, that it may lie level ; and before you lay on the Ground, take your Plate, and with a Charcoal well burnt, coal it over with very clean water ; then wash it off with clean Water never used before, and set it sloping to run off ; when it is dry, then scrape some Chalk fine all over it, and with a very clean fine rag rub it over ; but let not your fingers touch upon the Plate, till you have put the Ground on, which you must lay on thus.