Term: thinner

In painting and decorating, "thinner" refers to a solvent used to dilute or reduce the viscosity of oil-based paints, varnishes, lacquers, and other coatings to make them easier to apply. Thinners also help in cleaning brushes, rollers, spray equipment, and other tools after use with solvent-based products.

Common types of thinners include:

• Mineral turpentine (turps) – widely used in Australia for thinning oil-based paints.
• Lacquer thinner – used for thinning nitrocellulose lacquers and cleaning spray guns.
• Acetone – a fast-evaporating solvent used in some specialty coatings.
• Xylene or toluene – used in industrial coatings and for specific thinning requirements.

Important Note: Thinners are flammable and emit strong fumes, so they must be used in well-ventilated areas with appropriate personal protective equipment (PPE). Always follow the manufacturer's recommendations for the correct type and ratio of thinner to use with a particular product.