There are a few different ways that you can strip paint with vinegar. One method is to mix equal parts of vinegar and water in a spray bottle and then spraying the mixture onto the paint. Let it sit for a few minutes and then scrub the paint off with a brush or sponge. Another method is to soak a cloth in vinegar and then rub it onto the paint. This will take longer to work, but it will eventually start to loosen the paint so that you can scrape it off. Whichever method you choose, make sure that you protect your hands and eyes from the vinegar as it can be quite strong.