Search results for 'RCO'

Made from organic walnut husks collected in Cambridgeshire, this deep brown walnut ink is made to an 18th-century formula. Small batches of the ink are blended to give the required consistency and strength. It has good permanence, but will eventually fade if left in direct sunlight for sustained periods of time, and is not wholly waterproof, but has some staying power, especially on sized watercolour papers. As with all handmade products derived from natural ingredients, there may be slight variations in the colour and consistency as a result of seasonal changes.

Not Suitable for fountain pens. Learn More

Schmincke Mussini Large Wooden Box 15 x 35 ml tubes, 1 x 120 ml white including charcoal, brushes, and mediums. Learn More

A robust sketchbook with thread stitching to allow for smooth page turning. The natural white paper has superb abrasion properties, enabling you to effortlessly create broad strokes with pencil. The 140 gsm paper is suitable for dry painting techniques as well as light washes of watercolour Learn More

Cornelissen Lithography Sponge, Compressed. Designed to keep the litho stone wet during printing. It can be used for preparing printmaking or watercolour paper. Learn More

Handmade from 100% long fibred cotton rag. Acid free. Deckle edge. Tub sized (surface sized) with gelatine. Learn More

Cleans and restores brushes even when clogged for a year. For oil, acrylic, watercolour. Use with water. Learn More

PB15:3

Phthalo (Mona) Blue is a synthetic organic pigment, Copper Phthalocyanine, that has been in use since the 1930s. It has an extremely high tinting strength and is a staining colour, so cannot successfully be lifted in watercolour. It requires a wetting agent to fully disperse into a medium, and, when used at full strength, a copper sheen is visible in dried paint film. It is transparent, very lightfast, and has a medium-to-slow drying rate in oil.

Toxicity: C

While stocks last

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Metalpoint Wire, sold as individual pieces, 2 inches long Learn More

Cornelissen Series 1855 Sable Brush Size 12. The box contain 1 x Artists' Quality Kolinsky Sable watercolour Brush and a brush soap. Learn More

Gum Copal Manila is derived from the resin of a coniferous tree native to the Philippines. It is not to be confused with other copals, which are the product of fossilised plant materials. It can be dissolved in alcohol to make a spirit varnish, to be used as a substitute for shellac, or as a fixative for pastel and charcoal drawings. Please note, that when used as a fixative it may darken the colour of the image. Learn More

Naples Yellow Dark Pigment (PY41). Synthetic Inorganic pigment (Lead Antimoniate). Opaque. Good tinting strength. Excellent Lightfastness. Low oil absorption with fast drying rate. Suitable for all media except watercolours. Toxicity D.

Please note, unfortunately we are not able to send this product outside the UK.

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STABILO CarbOthello is a chalk pastel coloured pencil range available in up to 60 colours. With its wonderfully dry and dusty stroke it is just like a chalk pastel in pencil format. It's very popular with artists, art students and people with creative hobbies. Its high pigmentation guarantees great luminosity and opacity as well as colour fastness and colour brilliance especially on dark backgrounds and delicate papers. What's more it can be sharpened to a very fine tip which make it ideal for detail. Colours can be dry mixed and blended which makes colouring more fun and special.

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Soft but springy hair. For varnishing or lacquering. Also useful for watercolour washes. Learn More

Finest quality ox hair suitable for lacquers and fine varnishes. May also be used for watercolour washes. Learn More

Gamboge is a natural tree resin, generally extracted by tapping of Garcinia trees, available as a powder and in the solid "pipe" form. One of the unique features of Pipe Gamboge is that it does not require a binding agent to be used as a paint. Instead, colour can be lifted with a wet brush, as from a watercolour pan. When used as a water colour, it gives a bright transparent golden yellow colour. It is highly transparent, fugitive to light, with a weak tinting strength. The powder can be dissolved in alcohol to colour resin-based varnishes. Gamboge was used from ancient times to dye the clothes and also to make a transparent yellow varnish for the colouring of wood, metals and leather.

Pipe Gamboge is available while stocks last. Larger quantities are available by request.

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Cobalt Violet Light Pigment (PV14). Synthetic inorganic pigment. Semi-opaque. Weak tinting strength. Excellent Lightfastness. Fast drying rate. Good for oil and watercolour but not acrylic as pigment 'settles out'. Used since early 1900's. This colour cannot be matched through mixing other colours.

Limeproof

Toxicity: C

Please note, unfortunately we are not able to send this product outside the UK.

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Casein is a protein derived from dried milk, which has been used in painting since ancient times. It can be combined with Ammonium Carbonate to form an emulsion, which acts as a durable, non-resoluble binder for pigments, producing a matte, fast-drying paint, similar in appearance to egg tempera. We use casein as a binder for our L. Cornelissen & Son Pigment Colour Charts, as it is a medium that clearly showcases the characteristics and behaviour of each pigment in its pure form. Casein paints can be applied in thin layers to watercolour paper, but would require a more rigid support, such as a gesso panel, to be applied thickly, as the comparative inflexibility of the paint layer means that it can be prone to cracking. Subsequent layers of paint should be more diluted to aid adhesion, and impasto effects are not recommended. It is possible to varnish casein paintings using an acrylic or damar varnish to obtain a glossy surface if desired, although this is not a necessary step. Casein can also be used as an ingredient in gesso, and is a suitable binder for fresco secco techniques.

Some pigments may require a wetting agent in order to fully disperse within the binder, in which case alcohol may be used.

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Extra soft brush for varnishing or lacquering. Also useful for watercolour washes. Learn More

This brush has an excellen point and spring well suited to detail work in acrylic, watercolour and oils Learn More

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.

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Spectrafix 360ml. A natural non-toxic milk casein fixative based on an antique recipe used by Degas himself. This is the perfect fixative for pastel, charcoal, gouache and watercolour. Its workable matt finish allows deep layering with minimal colour shift. Learn More

PB27

Prussian Blue is a synthetic organic pigment that was discovered by the paint maker Diesbach, apparently by accident, in Germany in the early eighteenth century. For many years, it was used not only as a colour in its own right, but also as a component of the original Hooker's Green. The other ingredient, gamboge, is highly fugitive, which is why many watercolours painted with Hooker's green have taken on a bluish tone with with age.  

It is a very transparent and heavily staining colour. It dries quite quickly in oil, and can therefore wrinkly if applied too quickly. It is suitable for use in oils, watercolour, and egg tempera. However, it shouldn't be used in conjunction with alkali substances, such as Lead White or Calcium Carbonate as it can turn brown, so it isn't suitable for fresco. For the same reason, it isn't used with acrylic resin binders due to their alkaline nature, so most paint manufacturers will replace Prussian Blue with a mixture of Phthalo Blue and black in their acrylic ranges. It requires a wetting agent to fully disperse into a binder.

Toxicity: B

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Handmade Paper, 100% Long Fibred Cotton Rag, Acid free, Medium-Rough surface, Deckle Edged. All papers are internally sized with neutral pH size. Learn More

Gum Arabic is a resoluble binding agent, commonly used in the preparation of watercolours, but also useful as an adhesive, a size, and in the production of soft pastels. It is a natural product, harvested from the Acacia tree between October and May. The highest grade of Gum Arabic comes from the Kordofan region of Sudan. It is exceptionally pale and pure and therefore particularly suited to watercolour painting, while Nigerian Gum Arabic (while stocks last) is better suited to stone lithography and other printmaking techniques. Please see the Formulas & Recipes section on our homepage for a recipe to make your own watercolour paints using Gum Arabic (currently under construction). Learn More

PR233

Potter's Pink is an artificial mineral pigment produced by roasting tin oxide with various other oxides. It was first discovered in the pottery region of Staffordshire in the late-1700s, and in the following century Winsor & Newton introduced Potter's Pink into their watercolour range under the name "pink colour". It went on to become a popular addition to watercolour palettes, offering an opaque, lightfast colour with a weak tinting strength and a medium level of oil absorption.

Toxicity A

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Gum Tragacanth is a natural tree gum with pigment-binding properties. It can be used to make a very matte watercolour, but is most commonly used in the production of soft pastels.

Please see the Formulas & Recipes section on our homepage for a recipe to make your own pastels using Gum Tragacanth (currently under construction). 

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The perfect introduction to working with pigment, this selection of thirty pigments provides a wide range of colours for the production of paint. Each colour is supplied in a 15ml plastic jar, and the set includes both natural and synthetic colours. Recipes can be found on our homepage, with instructions for making different paints, including watercolour, egg tempera and oil paint. Learn More

This unbranded watercolour tin box is the same as the light weight metal boxes used by most of the major European colour-makers. The back of the box includes thumb ring. Dimensions: 22.2 x 7 x 2cm Learn More

Liquid charcoal in the 35 ml tube - a clean, dust-free way of painting, charcoal drawing and underpainting with charcoal. The three pigments of natural origin used for this (PBK 8, pit black) are created by charring fruit seeds from the EU area and result in the following unique coal nuances: a neutral peach stone black - 18 757 a warm, brownish cherry pit black - 18 756 a cool, bluish grape seed black - 18 755 Due to the larger quantity of available paint, liquid charcoal can be used to quickly process large areas. The liquid charcoal contains the high-quality binder gum arabic like traditional artists' watercolours (gouaches, watercolours, etc.), has a gouache-like consistency and can be diluted with water, so that different shades, structures and layer thicknesses can be achieved by different application. Depending on the substrate and the thickness of the layer, it can be wiped off by hand and removed with water. Used as thin underpainting (e.g. in oil painting), subsequent paints do not become dirty or become less dirty than with conventional charcoal underpainting due to the higher adhesion of the bound carbon pigments to the substrate. Of course, the liquid charcoal can be combined with drawing charcoal. The blurring and removability of the liquid charcoal depends on the surface of the substrate - the more even and firm the surface, the easier to change the application. Pre-tests are recommended. Learn More