Chalk Fillers and Abrasives - Pigments Gums & Resins

Alumina Hydrate Light

Starting at: £8.30

Alumina Hydrate is an inert pigment with highly absorbent properties, which can be ground into oil paint as an almost colourless extender. It is often used as an additive in commercial oil paints, particularly in conjunction with transparent or lake pigments, as it provides stability and a homogenous consistency without effecting colour or gloss, although it may effect the pigment strength. When combined with linseed oil, it produces an almost transparent painting medium for extending oil colours. Sometimes referred to as Lake Base. Learn More

Fumed Silica

Starting at: £13.60

Call to Order

An inert substance with coarse texture and no colouring capability. Use in grounds and to provide tooth to mixed paints. Also used as an adulterant. Can be used for thickening acrylic and oil mediums. Learn More

Plaster of Paris

Starting at: £5.50

For moulding when mixed with the same volume of water. Sets quickly and will not shrink. Learn More

Gypsum

Starting at: £5.70

Gypsum is powdered Calcium Sulphate, a traditional ingredient in gesso grounds used in southern Europe. One of the advantages of preparing your painting surface with gypsum is that it allows for a particularly even absorption of the paint film. It can also be added to acrylic primers to increase absorbency or add tooth to a surface. Learn More

Marble Dust

Starting at: £4.70

Imparts textue when added to acrylic mediums and primers. Used in lime mortar. Meets paint pigment specificitions in its fine form. Mesh size: Course (Irregular granules), Medium (16) and Fine (100). Learn More

Pumice Powder

Starting at: £5.70

Volcanic rock in powdered form. Used to provide tooth to grounds. Learn More

Whiting

Starting at: £4.00

Whiting is powdered Calcium Carbonate, which can be mixed with rabbit skin glue to create a chalk-based ground for oil, tempera, distemper or encaustic painting. Traditionally, whiting was an important ingredient when preparing painting surfaces in the north of Europe, as opposed to gypsum (Calcium Sulphate), which was widely used south of the Alps. Learn More

Fullers Earth

Starting at: £6.30

Fullers Earth is used to remove plant debris and other impurities from cold-pressed linseed oil, as its large particle size and unusual shape attracts unwanted matter and pulls it down, away from the surface of the oil. Our Fullers earth consist sly of Bentonite.

Learn More

Gesso di Bologna

Starting at: £12.00

Gesso di Bologna is a bright white Calcium Sulphate, or gypsum, from Italy, which can be used as a substitute for whiting in the preparation of gesso. It is ground to a particularly fine powder, which makes it a suitable ground for gilding, as the small size of the particles allows for greater compression when burnishing. Learn More

Precipitate Chalk

Starting at: £6.30

Precipitate Chalk is fine and white. For use in aqueous mediums as a ground for oil and tempera paintings. Learn More

Rottenstone Grey

Starting at: £7.00

Fine abrasive powder used historically for polishing daguerreotype plates. Can be used to age wooden frames and object's d'art. Learn More