Nail file
A nail file is a tool used to gently grind down and shape the edges of nails. They are often used in manicures and pedicures after the nail has been trimmed using appropriate nail clippers. Nail files may either be emery boards, ceramic, glass, crystal, plain metal files or metal files coated with corundum. A nail drill is a powered rotary tool, which is used by a nail technician to file nails. Materials Emery board Emery boards are small, flat, long objects that have emery or emery paper glued to them, making them both abrasive and flexible, used for fingernail and toenail care. They are used by manicurists to shape and smooth the nail during manicure and pedicure sessions. Emery boards are inexpensive and disposable, making them a sanitary alternative to metal nail files. The emery board was first patented by J. Parker Pray of New York in 1883. Emery boards are generally less abrasive than metal nail files, and hence, emery boards may take longer to file down nails than metal nail files. Emery boards are usually less expensive than metal nail files and so can be economically disposed of after use on a single person. The nail can