The knife will be resistant to further patination and corrosion. Further information is available on copper patination. She was an expert in the techniques of bronze casting and patination of bronze. Pre patinated finishes are available from certain manufacturers to expedite the natural patination process. He also incorporates metal and metal patination in the projects. If patination has flaked off, repatination may be recommended. At the time it was covered with lichen and patination and was hardly visible. In marine climates, the entire patination process can take seven to nine years. For artworks, patination is often deliberately accelerated by applying chemicals with heat.