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How to clean a varnish brush
Clean your varnish brush immediately after using it.
Cleaning your varnish brush immediately after using it will prevent any buildup in the bristles, which can cause your brush to get stiff over time. Make it a habit to clean your brush every time you use it so it can stay in good condition.

pick from the following. a). Some varnish brushes come with short handles or shallow attachments, so be sure to sharpen them immediately after using them. Perform a deep cleaning at least once every six months.. b). For instance, set aside a case on your table with all of your brushes you plan to use that day to wipe down once you finish your painting experience. Extend the cleaning time to the next few days while you reapply your varnish brush.. c). Trim up any flaking or split ends. Varnish brushes are rough, harsh tools that can irritate your skin.. d). Wear rubber gloves and work in a well-ventilated room. Mineral spirits are a type of paint thinner useful for getting oil paints or varnishes out of brushes..
d).