Nail file
Encyclopedia
Nail (anatomy)
A nail is a horn-like envelope covering the dorsal aspect of the terminal phalanges of fingers and toes in humans, most non-human primates, and a few other mammals. Nails are similar to claws, which are found on numerous other animals....
. They are often used in manicure
Manicure
A manicure is a cosmetic beauty treatment for the fingernails and hands performed at home or in a nail salon. A manicure treatment is not only a treatment for the natural nails but also for the hands. A manicure consists of filing, shaping of the free edge, treatments, massage of the hand and the...
s and pedicure
Pedicure
A pedicure is a way to improve the appearance of the feet and the nails. It provides a similar service to a manicure. The word pedicure refers to superficial cosmetic treatment of the feet and toenails...
s after the nail has been trimmed using appropriate nail clipper
Nail clipper
A nail cutter is a hand tool used to trim fingernails and toenails.-Design:Nail cutters are usually made of metal but can also be made of plastic. Two common varieties are the plier type and the compound lever type. A third variety of the push-button type has also been introduced. All are common...
s. Nail files may either be emery boards, ceramic, glass, crystal, plain metal files or metal file
File (tool)
A file is a metalworking and woodworking tool used to cut fine amounts of material from a workpiece. It most commonly refers to the hand tool style, which takes the form of a steel bar with a case hardened surface and a series of sharp, parallel teeth. Most files have a narrow, pointed tang at one...
s coated with corundum
Corundum
Corundum is a crystalline form of aluminium oxide with traces of iron, titanium and chromium. It is a rock-forming mineral. It is one of the naturally clear transparent materials, but can have different colors when impurities are present. Transparent specimens are used as gems, called ruby if red...
(sapphire
Sapphire
Sapphire is a gemstone variety of the mineral corundum, an aluminium oxide , when it is a color other than red or dark pink; in which case the gem would instead be called a ruby, considered to be a different gemstone. Trace amounts of other elements such as iron, titanium, or chromium can give...
).
Emery board
Emery boards are pieces of cardboardPaperboard
Paperboard is a thick paper based material. While there is no rigid differentiation between paper and paperboard, paperboard is generally thicker than paper. According to ISO standards, paperboard is a paper with a basis weight above 224 g/m2, but there are exceptions. Paperboard can be single...
which have emery
Emery (mineral)
Emery is a very hard rock type used to make abrasive powder. It largely consists of the mineral corundum , mixed with other species such as the iron-bearing spinels hercynite and magnetite, and also rutile...
or emery paper
Emery paper
Emery paper is a type of paper that can be used for sanding down hard and rough surfaces.It can also be used for resistant technology purposes to give a smooth, shiny finish to manufactured products and is often used in the finishing of high-end watch movements.Similar to sandpaper, it is made by...
glued to them, making them both abrasive and flexible, used for fingernail and toenail
Nail (anatomy)
A nail is a horn-like envelope covering the dorsal aspect of the terminal phalanges of fingers and toes in humans, most non-human primates, and a few other mammals. Nails are similar to claws, which are found on numerous other animals....
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 the metal nail files, and hence, emery boards may take longer to file down nails than metal nail files. However, nail files may play a role in disease transmission
Transmission (medicine)
In medicine and biology, transmission is the passing of a communicable disease from an infected host individual or group to a conspecific individual or group, regardless of whether the other individual was previously infected...
if they are used on more than one person without adequate sterilization
Sterilization (microbiology)
Sterilization is a term referring to any process that eliminates or kills all forms of microbial life, including transmissible agents present on a surface, contained in a fluid, in medication, or in a compound such as biological culture media...
. Emery boards are usually less expensive than metal nail files, therefore emery boards can be economically disposed of after use on a single person.
The nail can be smoothed and shaped accurately by taking light, even strokes in one direction across the top of the nail. Twenty to thirty easy strokes can typically shorten excessively long fingernails, while five to ten strokes are sufficient for shaping the nails.
Guitar
Guitar
The guitar is a plucked string instrument, usually played with fingers or a pick. The guitar consists of a body with a rigid neck to which the strings, generally six in number, are attached. Guitars are traditionally constructed of various woods and strung with animal gut or, more recently, with...
players have also been known to use emery boards to smooth out callus
Callus
A callus is an especially toughened area of skin which has become relatively thick and hard in response to repeated friction, pressure, or other irritation. Rubbing that is too frequent or forceful will cause blisters rather than allow calluses to form. Since repeated contact is required, calluses...
es which may snag the strings of their guitars.
Emery pitches
BaseballBaseball
Baseball is a bat-and-ball sport played between two teams of nine players each. The aim is to score runs by hitting a thrown ball with a bat and touching a series of four bases arranged at the corners of a ninety-foot diamond...
pitchers and cricket
Cricket
Cricket is a bat-and-ball game played between two teams of 11 players on an oval-shaped field, at the centre of which is a rectangular 22-yard long pitch. One team bats, trying to score as many runs as possible while the other team bowls and fields, trying to dismiss the batsmen and thus limit the...
bowlers have been known to use emery boards to scuff the outside of the ball. The roughness can offer more grip and hand control. Surface scratches also alter the ball's aerodynamics
Aerodynamics
Aerodynamics is a branch of dynamics concerned with studying the motion of air, particularly when it interacts with a moving object. Aerodynamics is a subfield of fluid dynamics and gas dynamics, with much theory shared between them. Aerodynamics is often used synonymously with gas dynamics, with...
making it more susceptible to spin and movement when in flight. However, the deliberate manipulation of the ball using an emery board is classified as cheating in baseball and cricket.
In an infamous 1987 Major League Baseball
Major League Baseball
Major League Baseball is the highest level of professional baseball in the United States and Canada, consisting of teams that play in the National League and the American League...
incident, Joe Niekro
Joe Niekro
Joseph Franklin Niekro was an American Major League Baseball right-handed pitcher. He was the younger brother of pitcher Phil Niekro, and the father of Minor League Baseball pitcher Lance Niekro. A native of Blaine, Ohio, Niekro attended Bridgeport High School in Bridgeport, Ohio and attended West...
of the Minnesota Twins
Minnesota Twins
The Minnesota Twins are a professional baseball team based in Minneapolis, Minnesota. They play in the Central Division of Major League Baseball's American League. The team is named after the Twin Cities area of Minneapolis and St. Paul. They played in Metropolitan Stadium from 1961 to 1981 and the...
was caught with an emery board in his pocket and suspended for ten games. He claimed it was for filing his nails.
Glass
Glass nail files are more recently available. Since glass nail files have a smoother and more even surface they do not splinter the nail like emery boards or metal nail files. This makes them a preferred instrument by manicurists, although they are sometimes difficult to find in stores.History
Although the modern nail file has only appeared at the end of the 19th century, evidence of nail file-like tools exist even further back in history. Marie AntoinetteMarie Antoinette
Marie Antoinette ; 2 November 1755 – 16 October 1793) was an Archduchess of Austria and the Queen of France and of Navarre. She was the fifteenth and penultimate child of Holy Roman Empress Maria Theresa and Holy Roman Emperor Francis I....
was known for her obsession of the 'lime à ongles', which was a nail file-like tool made of the pumice stone. Seeing her perfectly shaped nails, it instantly became the latest female trend in the French Court of Versailles. The pumice stone was carved into a pencil like shape, which was used to trim and shape the edges of the nail. This tool would not be disposed after use, but would be hand washed by the maids and placed by the bathtub to be used again.