Unpolished Stone Natural Stone is available in many forms and finishes, with porous ones providing the best adhesion. Before using, always make sure the stone is thoroughly cleaned. It is generally fine to draw or paint directly on clean stones with acrylics, oils, and watercolors. If less absorbency is desired, apply a commercial masonry primer … Read more
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Leather Leathers and finishes vary greatly. So, testing an area or similar materials before beginning is highly recommended. Bend and stretch the test mimicking normal wear. If cracking appears in testing, then follow the instructions for adding GAC 900 to acrylics for softness as recommended in the article linked below. Remove any previously applied coatings. … Read more
Corrugated Cardboard Made from a combination of Kraft paper, recycled pulp, and sizes or glues, cardboards among one of the most common paper products in use. When working on these types of papers, acrylics, watercolors, and dry drawing media, a barrier is not required. However, when painting with oils on paper, an application of 3 … Read more
