How To Clean Polyurethane Brush. Polyurethane is a clear top coating applied over wood finish and paint. I used a brush to apply polyurethane on some trim work. Cleaning a brush actually starts with preparation before using it.
The paint thinner need only be applied to the bristles, or foam section, of the brush in order to remove the polyurethane.
I promise it won't be that bad—or at least not as. Steps reshape your paint brush bristles and allow the paint brush to dry. It's important to clean your brushes immediately. How to clean polyurethane paint from brushes. You can remove polyurethane from fabric by scraping off the excess using a rubber scraper. But there's much more to properly cleaning your makeup tools than regularity. When the poly was still wet, you can use mineral spirits, (paint thinner), to clean the brush. How much do you need & how long will it last?
