When carving curved surfaces, laser carving machines usually use auxiliary systems, such as rotation AIDS, so that cylinders such as bamboo tubes, wine bottles, bird cages and so on can be carved. In addition, there is another kind of irregular and uneven surface. You can choose a laser head that can automatically adjust the focal length to work. Now laser engraving machine manufacturers have been able to produce laser heads for automatic focusing of metal and non-metal materials. This makes surface sculpting possible.