How is the steel mesh of SMD circuit board made? What machine or process is used?

Hello, there are two ways to make steel mesh, chemical etching (etching) and laser cutting (laser). In the case of etching, the processed GERBER data need to be made into a thin film by optical drawing mechanism, and then the pattern on the thin film is transferred to the steel sheet, and then processed in etching machine. The main principle is the principle of chemical oxidation reaction. Laser cutting is to transmit the processed GERBER data directly into the laser machine, and use the computer to control the laser machine to punch holes in the steel plate. Generally, if there are precision components (that is, IC pin center-to-center distance is less than or equal to 0.5MM or there are 0.201component), choose laser cutting, because this precision is higher than etching, but the corresponding price is also high, otherwise choose etching process, because the price is relatively cheap, which can fully meet your needs. I hope my answer can help you.