In order to achieve maximum contrast, synthetic resin or paint can be sprayed on the laser carved area, especially on polished stone. The resin and paint have stronger adhesion on the surface that has been laser carved (roughened), and are colored after carving to obtain good color effects. The invasion of color is mainly caused by the penetration of pores generated by laser emission and polishing.
Laser is particularly suitable for the carving and processing of dark natural stones for polishing, such as granite, marble, and basalt. The better the uniformity of the stone and the finer the texture, the better the laser carving effect. However, even pebbles can be carved and processed with laser as long as their surface is smooth enough. Another ideal stone is white marble – laser carving can form a uniform white carving effect.
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