Pebeo Artist Acrylics Auxiliaries Raw Sand Mortar, 500-Milliliter Raw sand mortar for acrylic paints in 500ml jar When mixed with acrylic colors, leave to dry away from dust between 30 minutes to 1 hour; the paint is completely dry in 1 to 8 days depending on thickness; very adherent and indelible once dry with a flexible and resistant to bending film The raw sand mortar can be applied on canvas, cardboard, wood, and metal (suitable for most surfaces) when mixed with acrylics or used pure Can be used with all extra fine and fine acrylic colours or with acrylic inks Can be diluted with water or thinned using Bindex Clean brushes and painting knives with soapy water