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Verdigris is an artificial pigment that dates from antiquity. Originally, it was produced by exposing copper to vinegar; nowadays acetic acid is used. It is acidic, so can contribute to the deterioration of paper supports. For this reason, it is more suited to oil or tempera painting than it is to watercolour. In tempera painting, it should be bound in animal glue or isinglass glue rather than egg york. When used in oil painting it should be held in a resin oil or balsam such as Venice Turpentine, as it can turn brown when ground directly into linseed oil. It is a fast-drying, transparent pigment, with a visible crystalline structure. 

Larger quantities are available by request.

** While stocks last ** Blue Verditer, sometimes referred to as Bremen Blue, is a synthetic form of Azurite, or copper-calcium carbonate. It has a weak tinting strength and is sligtly transparent. It works best in water-based binders, as the acidity of linseed oil can cause discolouration. 

Larger sizes available on request

Cornelissen Press T52100, Bed size: 52 x 100 cm, Upper Roller Diameter: 157 mm, Lower Roller Diameter: 157mm, Weight: 106 kg. Etching press base: 58 x 63 cm. We offer press demonstrations for this model. Please call Cornelissen for more details. Delivery to your address usually takes up to 4 weeks to UK & EU countries and 6 weeks to USA after the order is placed.

NB1

Genuine Indigo is a natural vegetable pigment derived from the Indigofera Tinctoria plant, which was first imported into Europe from India in the seventeenth century. It replaced woad, which had been grown natively in Europe for its blue dye. The leaves are soaked in water to ferment; upon drying, an oxidised residue forms on the dry leaves, which is removed, washed, boiled in water, and then dried to form cakes of pigment or dye.

Indigo is very transparent, with a good tinting strength. It requires a wetting agent to disperse, and in oil it dries very slowly. It is fugitive to light; this drawback means that it is no longer commonly available in commercial paints. It fell out of general use at the beginning of the seventeenth century, largely replaced by Prussian Blue, and synthetic Indigo was patented in the 1890s. However, it provides a subtle shade of blue that is still desirable in works that are going to be protected from light.

Toxicity: B

Our unprimed cotton ducks are economical painting supports, offering an even grain and regular surface. Woven in India, these cottons are provided as loom-state textiles, meaning that they will shrink once wetted. We offer three thicknesses:

9oz : A strong textile with a half panama construction, meaning that there are two warp yarns over each weft. 300gsm.

120z: A classic canvas for painting, recommended for larger works, with a smooth, dense construction made from braided yarns. 400gsm.

15oz: A strong, dense textile, woven with braided yarns, recommended for thickly painted works. 500gsm. 

Refined liquid fish glue for use as a size for gilding on paper. It can also be used as a glue for paper and as a binder in gesso for raised illumination. Seccotine is made from the skin of the Atlantic deep sea cod fish. It remains flexible after drying.

PERMITTED USES Over 18s only. Proof of age required. E-mail: info@cornelissen.com Learn More