GOLDEN Stop-Out Varnish for Intaglio Printmaking is a rich black liquid acrylic that represents a total replacement for traditional toxic asphaltum and lacquer based stop-out varnishes. GOLDEN ARTIST COLORS, Inc. developed this product in collaboration with print-maker Keith Howard. Its use is fully described in his book Non-toxic Intaglio Printmaking ISBN 0-9683541-0-6.
For use with all intaglio metal plate etching where ferric chloride or the Edinburgh Etch is used.
Degrease plate before applying GOLDEN Stop-Out Varnish.
Apply the Stop-out Varnish by either pouring directly from the container or by brushing it onto the metal plate.
Can be force-dried with a hair-dryer.
When re-applying the Stop-Out Varnish onto copper plates, rinse plate with a dilute water and baking soda solution (5%). Rinse with cold water, dry and then apply the Stop-out Varnish.
Mix one half cup of washing soda (sodium carbonate) with 1 quart of hot water and place into photo developing tray. Place the metal plate with Stop-out Varnish into this solution and rub with a soft brush until the varnish completely dissolves. If Stop-out Varnish is allowed to remain on a plate for more than a few days, a 10% solution of household ammonia and cold water must be used in place of the soda solution described above.
The above information is based on research and testing done by Golden Artist Colors, Inc., and is provided as a basis for understanding the potential uses of the products mentioned. Due to the numerous variables in methods, materials and conditions of producing art, Golden Artist Colors, Inc. cannot be sure the product will be right for you. Therefore, we urge product users to test each application to ensure all individual project requirements are met. While we believe the above information is accurate, WE MAKE NO EXPRESS OR IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, and we shall in no event be liable for any damages (indirect, consequential, or otherwise) that may occur as a result of a product application.