There is no need to use a micro-locking light to treat areas where the etchant is corroded. A variety of different brushes can be used to apply a layer of shielding adhesive. Generally, these brushes are small paint brushes. It is important to keep this in mind when the micro-locking process determines a small transition between the etched and non-etched areas. These areas require workers to cover them with tape or glue.

Flow and soak: These two basic methods expose the surface of the mold texture to the etchant. Essentially, the flow method is to remove most or all of the surface of the mold texture that needs to be etched from the liquid, and then spray or use an etchant on the surface. In general, this method is only used when the mold block is too large to fit into the solution tank or if there is not enough solution tank to soak the mold texture.

The soaking method, as the name implies, simply soaks or immerses the entire micro-patterned light-blocking block into the etchant solution bath. Molding of mold textures (such as large aluminum mold blocks) using flow etching can be a significant challenge because aluminum can be corroded as the etchant flows down the mold micro-locked light-treated surface. The immersion method is easier to control, and the etching effect is more uniform. However, the use of the soaking method is limited by the size of the solution tank and the handling of the mold block.

Laser etching can also be used. This method can be used when a pattern is cut and engraved by a barrier layer in front of the solution bath. Then apply a new barrier and continue etching to a deeper depth. The result is a multi-layered profile rather than a uniform stack. Prior to texture etching, although different micro-grain locks, sometimes the surface of the mold is required to achieve a certain surface finish, but the safe surface finish is only equivalent to SPI B3 320 paper. Remember: 0.001in (1in = 25.4mm, the same below) deep pattern can show the trace of the tool.