The lower the grit of the file, the more ____________ the action?

Choosing a file with lower grit means that the file has fewer abrasive particles per square inch, leading to a coarser texture. This coarser texture results in a more aggressive action when filing, allowing the technician to remove material more quickly from the surface of the nail. Lower grit files are typically used for shaping and shortening the nails, where more significant material removal is required.

In contrast, higher grit files are finer and are used to smooth the surface of the nail after shaping, providing a gentler action. Thus, understanding the role of grit levels on the effectiveness and type of filing action is essential for nail technicians to achieve desired results while minimizing damage to the nail.