The quality of an oil painting begins with the materials. The “support” is typically stretched linen or cotton canvas, primed with gesso to prevent the oil from rotting the fabric. The “medium” is the binder—usually linseed oil—which holds the pigment particles together. However, the modern palette often includes “alkyd mediums” to speed drying, or “stand oil” for a smooth, enamel-like finish. Brushes are equally critical: stiff hog-bristle brushes are used for applying thick paint (impasto), while soft sable or synthetic rounds are reserved for fine details and smooth blending. Finally, solvents like odorless mineral spirits are used to thin paint and clean brushes. The choice of materials dictates not only the process but the longevity of the final artwork.
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