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Polyurethane and mineral spirits
. Thin your polyurethane with mineral spirits. Providing Specialized Cast Polyurethane Products to a Broad Range of Industries. AdCustom Molded Polyurethane Parts · Quick Lead Times · Nearly 40 Years of Experience. /09/13 Typically, when you are thinning out oil-based polyurethane or oil-based varnish, you will be working with mineral spirits. rainer-daus.de › 7-tips-applying-polyurethane. Apr 3, The mineral spirits will provide a more forgiving coat of polyurethane and will also help any bubbles in the finish to burst before it sets up . The added solvent also helps to eliminate air bubbles and wrinkles. Sometimes, people assume that adding spirits to polyurethane will make the finish dry quicker, but this is not the case. Oil-based polyurethane is mixed with mineral spirits to make a thinner coat and give you more control over the final coat. The added solvent also helps to eliminate air bubbles and wrinkles. Sometimes, people assume that adding spirits to polyurethane will make the finish dry quicker, but this is not the case. Oil-based polyurethane is mixed with mineral spirits to make a thinner coat and give you more control over the final coat. Put . 2. Follow these steps to mix polyurethane with spirits: 1. Get your materials together: polyurethane, mineral spirits, a glass or plastic container, and a wooden stirrer. If the tipping-off doesn't work well enough, add 5 or 10 percent mineral spirits to keep the finish “open” longer and give the bubbles more. It will soften the. Mineral spirits will not affect polyurethane, so a rejuvenator is needed for this. This is simply paint stripper thinned with solvent.