Water Level Controls and Devices. A water column is used on a steam boiler to reduce the turbulence and fluctuation of the water level so the gage glass can provide a steady, accurate water level reading. The use of a water column is not mandatory.
Preparation. Verify the paint is completely dry. Never use varnish to seal acrylic paint if it is even slightly wet. Dust the surface of the dry paint gently with a clean cotton rag or paper towel. Rinse a jar or cup with water to remove any dust particles. Read the label on your varnish to find the correct water-to-varnish ratio. Mix the varnish with water in the jar or cup.
Mediums for acrylic painting make this already adaptable paint even more dynamic. With medium, you can modify acrylic paint properties like thickness, shine, drying time and texture. This overview will help you get a better sense of the most frequently used mediums for manipulating acrylic paint.ediums for acrylic painting make this already adaptable paint even more dynamic. With medium, you can modify acrylic paint properties like thickness, shine, drying time and texture. This overview will help you get a better sense of the most frequently used mediums for manipulating acrylic paint.