Paste medium of finely ground calcite, silica and bentonite in pale linseed oil. Semi-transparent. Gives paint crisp consistency for impastos with fine detail. Thin with solvent or oil. Impasto Medium is an oil painting medium of finely ground calcite, silica and bentonite in pale linseed oil. Use it to extend paint without altering the consistency, making oil colours 'short' and buttery for impastos. Stiffer than Velázquez Medium, this putty-like medium makes colours slightly transparent while allowing you to build impasto, thick applications of paint. When added to oil paint, Impasto Medium does not alter its colour temperature. It can be thinned with solvent or oil. Depending upon the proportion added to paint, Impasto Medium does not affect the drying time significantly. Impasto Medium does not contain stearates, solvents, driers or natural or synthetic resins, so it is safe to add to oil paint without the worry of cracking or delaminating. Impasto Medium is a calcite-rich oil-painting medium. The soft white paste has little affect on oil colours, making them less opaque and slightly less saturated. Use it to build thick applications of colour.
