Wunda size is a water-based, synthetic size for gilding that reaches tack in 15 minutes. It can be thinned with water up to 10%, and has an open time up to 36 hours. Unlike oil sizes, Wunda size will never fully harden and the gilded surface should be sealed, if contact with the surface is expected. Wunda size is ideal for use on porous surfaces, such as wood and plaster, and can also be used on non-porous surfaces, such as metal and glass. It is important to note that wunda size should not be used on surfaces that will be exposed to direct sunlight or extreme heat, as it may discolor or degrade the surface.
Due to the freezing point of this product it can only be shipped throughout California only until April. Mclogan will not gurantee the product if it is ordered and shipped out of California the product is sold as a final sale.