How to clean petrified dry oil paints

How to clean petrified dry oil paints is a practical and easy way to clean up old dry spots because you forgot to clean. Severe damage due to dry coal can be repaired so that it can be used again in the future. Enough to boil the koas and pound with a hammer then repeat boiling and use a wire brush, finally use kerosene / thinner / gasoline to remove the dry paint. Simple ways that are simple and effective, hopefully simplify our lives. Aamiin