HOME

TheInfoList



OR:

A straight razor is a
razor A razor is a bladed tool primarily used in the removal of body hair through the act of shaving. Kinds of razors include straight razors, safety razors, disposable razors, and electric razors. While the razor has been in existence since before t ...
with a
blade A blade is the portion of a tool, weapon, or machine with an edge that is designed to puncture, chop, slice or scrape surfaces or materials. Blades are typically made from materials that are harder than those they are to be used on. Historica ...
that can fold into its handle. They are also called open razors and cut-throat razors. The predecessors of the modern straight razors include bronze razors, with cutting edges and fixed handles, produced by craftsmen from Ancient Egypt during the
New Kingdom New is an adjective referring to something recently made, discovered, or created. New or NEW may refer to: Music * New, singer of K-pop group The Boyz Albums and EPs * ''New'' (album), by Paul McCartney, 2013 * ''New'' (EP), by Regurgitator ...
(1569 — 1081 BC). Solid gold and copper razors were also found in Ancient Egyptian tombs dating back to the 4th millennium BC. The first steel-edged cutthroat razors were manufactured in
Sheffield Sheffield is a city status in the United Kingdom, city in South Yorkshire, England, whose name derives from the River Sheaf which runs through it. The city serves as the administrative centre of the City of Sheffield. It is Historic counties o ...
in 1680. By the late 1680s, early 1690s, razors with silver-covered handles along with other Sheffield-made products known as "Sheffield wares" were being exported to ports in the
Gulf of Finland The Gulf of Finland ( fi, Suomenlahti; et, Soome laht; rus, Фи́нский зали́в, r=Finskiy zaliv, p=ˈfʲinskʲɪj zɐˈlʲif; sv, Finska viken) is the easternmost arm of the Baltic Sea. It extends between Finland to the north and E ...
, approximately 1200 miles (1931km) from Sheffield. From there, these goods were probably sent to Finland and even Russia. By 1740, Benjamin Huntsman was making straight razors complete with decorated handles and hollow-ground blades made from cast steel, using a process he invented. Huntsman's process was adopted by the French sometime later, albeit reluctantly at first due to nationalist considerations. In England, razor manufacturers were even more reluctant than the French to adopt Huntsman's steel-making process and only did so after they saw its success in France. After their introduction in 1680, straight razors became the principal method of manual shaving for more than two hundred years, and remained in common use until the mid-20th century. Straight razor production eventually fell behind that of the safety razor, which was introduced in the late 19th century and featured a disposable blade. Electric razors have also reduced the market share of the straight razors, especially since the 1950s.ohiokids.org by the Ohio Historical Society, 1982 Velma Ave. Columbus, OH 43211-2497 (through the Internet Archive)
quote: "Today, men usually shave with disposable razors or electric razors, but that has not always been the case. For more than two hundred years, most American men who wanted to shave used a straight razor, also known as a straight-edge razor. This type of razor first appeared in England in the 1700s, and remained the mainstay of men's razors until the twentieth century.
A 1979 comparative study of straight and electric razors, performed by Dutch researchers, found that straight razors shave hair approximately 0.002 in. (0.05mm) shorter than electrics. Since 2012, production of straight razors has increased multifold. Straight razor sales are increasing globally and manufacturers have difficulty satisfying demand. Sales started increasing since the product was featured in the 2012
James Bond The ''James Bond'' series focuses on a fictional Secret Intelligence Service, British Secret Service agent created in 1953 by writer Ian Fleming, who featured him in twelve novels and two short-story collections. Since Fleming's death in 19 ...
film ''
Skyfall ''Skyfall'' is a 2012 spy film and the twenty-third in the ''James Bond'' series produced by Eon Productions. The film is the third to star Daniel Craig as fictional MI6 agent James Bond and features Javier Bardem as Raoul Silva, the vill ...
'' and have remained high since. Straight razors are also perceived as a better value and a more sustainable and efficient product. Dovo in Germany reports that since a production low of less than 8,000 units per year in 2006, the company sells 3,000 units per month, and has 110,000 orders with production
lead time A lead time is the latency between the initiation and completion of a process. For example, the lead time between the placement of an order and delivery of new cars by a given manufacturer might be between 2 weeks and 6 months, depending on vari ...
of three years. The increased sales have also led to an increase in the number of associated trades and
artisan An artisan (from french: artisan, it, artigiano) is a skilled craft worker who makes or creates material objects partly or entirely by hand. These objects may be functional or strictly decorative, for example furniture, decorative art, ...
s such as bladesmiths, leather craftsmen, and potters. Forums and outlets provide products, directions, and advice to straight razor users. Straight razor manufacturers exist in
Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a subcontinent of Eurasia and it is located enti ...
,
Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an ...
, and North America. Antique straight razors are also actively traded. Straight razors require considerable skill to hone and
strop A razor strop or simply a strop (sometimes called a razor strap or strap) is a flexible strip of leather, canvas, denim fabric, balsa wood, or other soft material, used to straighten and polish the blade of a straight razor, a knife, or a woodwo ...
, and require more care during shaving. Straight razor design and use was once a major portion of the curriculum in barber colleges.


History

Various forms of razors were used throughout history, which are different in appearance but similar in use to modern straight razors. In prehistoric times clam shells, shark's teeth, and flint were sharpened and used for shaving. Drawings of such blades were found in prehistoric caves. Some tribes still use blades made of flint to this day. Excavations in Egypt have unearthed solid gold and copper razors in tombs dating back to the 4th millennium BC. The Roman historian Livy reported that the razor was introduced in ancient Rome in the 6th century BC by legendary king
Lucius Tarquinius Priscus Lucius Tarquinius Priscus, or Tarquin the Elder, was the legendary fifth king of Rome and first of its Etruscan dynasty. He reigned for thirty-eight years.Livy, '' ab urbe condita libri'', I Tarquinius expanded Roman power through military con ...
. Priscus was ahead of his time because razors did not come to general use until a century later. The first narrow-bladed folding straight razors were listed by a
Sheffield, England Sheffield is a city in South Yorkshire, England, whose name derives from the River Sheaf which runs through it. The city serves as the administrative centre of the City of Sheffield. It is historically part of the West Riding of Yorkshire and ...
manufacturer in 1680. By the late 1680s, early 1690s, razors with silver-covered handles along with other Sheffield-made products known as "Sheffield wares" were being exported by John Spencer (1655—1729) of
Cannon Hall Cannon Hall is a country house museum located between the villages of Cawthorne and High Hoyland some 5 miles (8 km) west of Barnsley, South Yorkshire, England. Originally the home of the Spencer and later the Spencer-Stanhope family, ...
, a wealthy landowner and industrialist, to ports in the
Gulf of Finland The Gulf of Finland ( fi, Suomenlahti; et, Soome laht; rus, Фи́нский зали́в, r=Finskiy zaliv, p=ˈfʲinskʲɪj zɐˈlʲif; sv, Finska viken) is the easternmost arm of the Baltic Sea. It extends between Finland to the north and E ...
, approximately 1200 miles (1931km) from Sheffield. From there, these goods were probably sent to Finland and even Russia. By 1740, Benjamin Huntsman was making straight razors complete with decorated handles and hollow-ground blades made from cast steel, using a process he invented. Huntsman's process was adopted by the French sometime later; albeit reluctantly at first due to nationalist sentiments. The English manufacturers were even more reluctant than the French to adopt the process and only did so after they saw its success in France. Sheffield steel, a highly polished steel, also known as 'Sheffield silver steel' and famous for its deep gloss finish, is considered a superior quality steel and is still used to this day in France by such manufacturers as Thiers Issard. After their introduction in 1680, straight razors became the principal method of manual shaving for more than two hundred years, and remained in common use until the mid-20th century. Electric razors have also cut into the straight razor's market share, especially since the 1950s. Straight razors eventually fell out of fashion. Their first challenger was manufactured by King C. Gillette: a double-edged safety razor with replaceable blades. These new safety razors did not require any serious tutelage to use. The blades were extremely hard to sharpen, and were meant to be thrown away after one use, and rusted quickly if not discarded. They also required a smaller initial investment, although they cost more over time. Despite its long-term advantages, the straight razor lost significant market share. As shaving became less intimidating and men began to shave themselves more, the demand for barbers providing straight razor shaves decreased. Since 2012, production of straight razors has increased multifold. Straight razor sales are increasing globally and manufacturers have difficulty satisfying demand. Straight razor sales are increasing because they are perceived as a better value and more efficient product. Dovo in Germany reports that since a production low of less than 8,000 units per year in 2006, the company sells 3,000 units per month, and has 110,000 orders with production
lead time A lead time is the latency between the initiation and completion of a process. For example, the lead time between the placement of an order and delivery of new cars by a given manufacturer might be between 2 weeks and 6 months, depending on vari ...
of three years. The Dovo spokesman commented that around 2006, “we were producing less than 8,000 straight razors per year, The tradition of straight razor manufacturing had almost come to an end.” Dovo explains, that after the 2012
James Bond The ''James Bond'' series focuses on a fictional Secret Intelligence Service, British Secret Service agent created in 1953 by writer Ian Fleming, who featured him in twelve novels and two short-story collections. Since Fleming's death in 19 ...
film ''
Skyfall ''Skyfall'' is a 2012 spy film and the twenty-third in the ''James Bond'' series produced by Eon Productions. The film is the third to star Daniel Craig as fictional MI6 agent James Bond and features Javier Bardem as Raoul Silva, the vill ...
'', sales of straight razors increased multifold, and that "built into a wave of sustained overdemand that we are still riding today". The increased sales have also led to an increase in the number of associated trades and
artisan An artisan (from french: artisan, it, artigiano) is a skilled craft worker who makes or creates material objects partly or entirely by hand. These objects may be functional or strictly decorative, for example furniture, decorative art, ...
s such as bladesmiths, leather craftsmen, and potters.


Design criteria

The design of the straight razor is based on the grind of the blade, the width and length of the blade, the handle, which also affects the balance of the razor, the material of the blade, and the finish and degree of polish of the blade material.


Parts description

The parts of a straight razor and their function are described as follows: the narrow end of the blade rotates on a pin called the pivot, between two protective pieces called the ''scales'' or ''handle''. The upward curved metal end of the narrow part of the blade beyond the pivot is called the ''tang'' and acts as a lever to help raise the blade from the handle. One or two fingers resting on the tang also help stabilize the blade while shaving. The narrow support piece between the tang and the main blade is called the ''shank'', but this reference is often avoided because it can be confusing since the ''shank'' is also referred to as ''tang''. The shank sometimes features decorations and the stamp of the brand. The top side and the underside of the shank can sometimes exhibit indentations known as ''fluting'', or ''jimps'' for a more secure grip. The curved lower part of the main blade from the shank to the cutting edge is called the ''shoulder''.menessentials from web archive
(Parts of a razor) and: "Hold the razor at a 30 degree angle to the surface of your skin and shave your first even stroke"
The point where the shoulder joins the cutting edge is called the ''heel''. The endpoint of the cutting edge at the front of the blade, opposite to the ''heel'', is called the ''toe''. A thick strip of metal running transversely at the junction where the main blade attaches to the shank is called the ''stabiliser''. The stabiliser can be double, single, or can be absent in some razor models. The first stabiliser is usually very narrow and thicker and runs at the shank-to-blade junction, covering the shank and just spilling over to the shoulder. The second stabiliser can be distinguished since it is considerably wider, thinner, and longer, appearing after the first stabiliser and running lower toward the heel. The arched, non-cutting top of the blade is called the ''back'' or the ''spine'' while the cutting part of the blade opposite the back is called the ''cutting edge''. Finally the other free end of the blade, at the opposite end of the tang on the spine, is called the ''point'' and, sometimes, the ''head'' or the ''nose''. There are usually two, but sometimes three, pins in the handle. The middle pin, if present, is plastic coated and is called the ''centre plug''.
(Parts of a razor)
Its function is to stabilise the sides of the handle so that they cannot be squeezed in the middle and acts as a bridge between them. When folded into the scales, the blade is protected from accidental damage, and the user is protected from accidental injury. During folding, the back of the blade, being thick and normally with a curved cross-section, acts as a natural stopper and prevents further rotation of the blade out of the handle from the other side. The frictional force between the scales and the tang applied about the pivot is called the ''Tension'' and it determines how freely the blade rotates about the point of rotation. A proper amount of tension should be present, for safety reasons, to ensure that the blade does not spin freely when opening or closing.


Construction

Straight razors consist of a blade sharpened on one edge and a handle attached to the blade through a pin. The blade can then rotate in and out of the handle. The blade can be made of either stainless steel, which is resistant to rust but can be more difficult to hone, or high-carbon steel, which is much easier to hone, obtains a sharper edge but will rust more easily than stainless steel if neglected. Cheap stainless steel straight razors from Asia and more expensive stainless steel and
carbon steel Carbon steel is a steel with carbon content from about 0.05 up to 2.1 percent by weight. The definition of carbon steel from the American Iron and Steel Institute (AISI) states: * no minimum content is specified or required for chromium, coba ...
razors from Europe are available. A razor blade starts as a shape called the blank supplied by the steel manufacturer.


Forging

The blank of the blade is produced by forging steel
ingot An ingot is a piece of relatively pure material, usually metal, that is cast into a shape suitable for further processing. In steelmaking, it is the first step among semi-finished casting products. Ingots usually require a second procedure of s ...
s or steel available in other forms such as wire, springs, etc.. After the blank is formed, the first step is to clean it using a heavy forge. The material used for open razors is steel with a minimum carbon content of 0.6%. This percentage of carbon content ensures optimum hardness, flexibility and resistance to wear. Following the
forging Forging is a manufacturing process involving the shaping of metal using localized compressive forces. The blows are delivered with a hammer (often a power hammer) or a die. Forging is often classified according to the temperature at whi ...
stage, a hole is drilled in the tang at the pivot point. This is a crucial step, since after the steel hardening process it would be impossible to drill. This process requires great skill.


Hardening and tempering

The steel is hardened through a special process where the forged steel blade is heated up to approximately dependent on the specific steel. This heating enables fast and uniform heating of the steel at the optimum temperature for maximum hardness. The tempering stage follows the hardening process, where the blade is heated in a bath of oil at a temperature between . Tempering imparts the steel its flexibility and toughness according to the phase diagrams for steel. There are three types of steel blade according to the level of tempering it has received. Hard-tempered, medium-tempered and soft-tempered. Hard-tempered edges last longer but sharpening them is difficult. The converse is true for soft-tempered blades. The characteristics of medium-tempered blades are in-between the two extremes. Carbon steel blades can reach a maximum hardness of 61 HRC on the
Rockwell scale The Rockwell scale is a hardness scale based on indentation hardness of a material. The Rockwell test measures the depth of penetration of an indenter under a large load (major load) compared to the penetration made by a preload (minor load). T ...
.


Grinding

Following the processes of hardening and tempering, the blanks are ground, according to the two fundamental blade cross sectional area profiles.


Finishing

Subsequent to grinding, the blade is polished to various degrees of gloss. The finest finish, used in the most expensive razors, is the mirror finish. Mirror finish is the only finish used if gold leafing is to be part of the decoration of the blade.
Satin A satin weave is a type of fabric weave that produces a characteristically glossy, smooth or lustrous material, typically with a glossy top surface and a dull back. It is one of three fundamental types of textile weaves alongside plain wea ...
finish requires less polishing time and therefore is not as expensive to produce. This finish is mostly used with black acid etching. Satin finish can sometimes be applied, as a compromise, to the back of the blade while the mirror finish and gold leafing are applied to the more visible front of the blade. This way the blade will not be as expensive as a fully mirror finished one. Metal plating, using
nickel Nickel is a chemical element with symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chemically reactive but large pieces are slow ...
or silver, is also used, but it is not preferred; the plating eventually erodes through use, revealing the underlying metal, which is often of inferior quality. Nickel-plated blades are very difficult to hone repeatedly and are made for mainly aesthetic reasons though lacking functionality.


Blade decoration

The blade is decorated by engraving or gold leafing depending on the price. Less expensive blades undergo an
electrolytic An electrolyte is a medium containing ions that is electrically conducting through the movement of those ions, but not conducting electrons. This includes most soluble salts, acids, and bases dissolved in a polar solvent, such as water. Upon d ...
black acid engraving process. For more expensive blades, gold leafing applied by hand is employed, following a traditional process.


Sharpening

Sharpening is the final stage in the process. At first the blade is sharpened on a grinding wheel. Following that the blade can be honed by holding the blades against the flat side of rotating round stones, or by drawing the blade across stationary flat stones. The cutting edge is finished using a
strop A razor strop or simply a strop (sometimes called a razor strap or strap) is a flexible strip of leather, canvas, denim fabric, balsa wood, or other soft material, used to straighten and polish the blade of a straight razor, a knife, or a woodwo ...
. Sharpening is usually not completed during manufacturing, instead being done after purchase.


Handle materials and their properties

Handle scales are made of various materials, including
mother-of-pearl Nacre ( , ), also known as mother of pearl, is an organicinorganic composite material produced by some molluscs as an inner shell layer; it is also the material of which pearls are composed. It is strong, resilient, and iridescent. Nacre is ...
, Bakelite,
celluloid Celluloids are a class of materials produced by mixing nitrocellulose and camphor, often with added dyes and other agents. Once much more common for its use as photographic film before the advent of safer methods, celluloid's common contemporar ...
, bone, plastic, wood, horn, acrylic, ivory and tortoise shell. Celluloid can spontaneously combust at elevated temperatures. Buffalo horn tends to deform with time and it possesses form memory so it tends to warp. Mother of pearl is a brittle material and can exhibit cracks after some use.
Resin In polymer chemistry and materials science, resin is a solid or highly viscous substance of plant or synthetic origin that is typically convertible into polymers. Resins are usually mixtures of organic compounds. This article focuses on n ...
impregnated wooden handles are water resistant, do not deform and their weight complements the blade's to provide good overall balance for the razor. Snakewood, '' Brosimum guianense'', is also suitable for long term and intensive use. The mechanical properties of bone make it a good handle material. Handles were once made of elephant ivory, but this has been discontinued, though fossil ivory, such as mammoth, is still sometimes used, and antique razors with ivory scales are occasionally found (it is illegal to kill elephants for their ivory, but it is legal to buy an ivory-handled razor made before 1989).


Blade geometry and characteristics

The geometry of the blade can be categorised according to three factors: the blade width and weight, the shape of the profile of the point of the razor, and the type of grinding method used for the blade (as grinding method determines the degree of and therefore hollowness, or of the sides of the cross section of the blade).


Point types

Straight razors are, at first, categorised according to their blade profiles, from the head of the spine to the blade toe, based on their point, or nose, type. The following are the main types of blade profiles called points, or nose shapes: #Square, spike or sharp point, so-called because the blade profile is straight and terminates at a very sharp point at the toe, perpendicular to the cutting edge of the razor. This type of blade is used for precise shaving in small areas but, at the risk of pinching the skin, it requires some experience in handling. Spike point differs from square point as the angle at the edge of the blade is less than 90 degrees. resulting in a blade profile which appears slanted backwards at the toe. The spike end point of the profile at the toe may be ground by the user to make it rounder, but that may indicate a lack of skill in handling the razor. #Barber's notch. The Barber's notch point features a large rounded tip at the toe of the blade followed by a short concave and rounded arch, while its upper edge at the head of the spine is rounded and smaller in size than the curve at the toe. The upper, rounded, edge of Barber's notch was designed to aid in pulling the blade from the scales. Barber's notch is essentially a round-nose blade profile with a concave arch (notch) on its upper part to aid in lifting the blade from the scales. #Round point (or Dutch). As the name implies the point profile is symmetrically curved from head to toe in a circular arc shape and therefore it lacks any sharp end points. As such it is a more forgiving blade than the other types and, although lacking pinpoint accuracy at the blade toe, it is more forgiving, and is recommended for relatively inexperienced users. There are also secondary edge types that derive from a combination of round nose characteristics, such as ''half round point'' incorporating round edges joined by a linear segment. #: #French (or oblique) point. Its point profile is asymmetrically curved from head to toe, and resembles a quarter circle or ellipse, but with a sharper-angled curve near the head of the blade than the other points. The end line of the profile, at the toe of the blade, can vary between spike and curved. Compared to the rest of the points, the French point may help shave "difficult spots" such as under the nose, due to its sharply angular profile at the head which creates more clearance in tight areas. #: #Spanish point. The profile of the Spanish point has a small, rounded tip at the head, followed by a long concave arch, ending in a small rounded edge at the toe. This point should be used with care when shaving or stropping, as it tends to "bite" due to its pronounced edges.


Grinding method

The second category refers to the type of grinding method used and, since it affects the curvature of the blade cross section, includes the following two main types of blade grinds: #Hollow grind, indicating that the sides of the blade cross section are concave.Blade diagrams from Classic shaving
through Internet Archive
#Flat or straight grind, indicating that the sides of the blade cross section are linear. This cross section most closely resembles a wedge and therefore this blade is sometimes called the wedge. The combination of the types found in these two classification categories can, in theory, lead to a wide variety of blade types such as round point hollow ground, square point flat ground etc., but in practice some points are combined with a specific grind. As an example, a French point blade is usually flat ground. A hollow grind produces a thinner blade than the flat grind because it removes more material from the blade (''hollows'' or ''thins'' the blade more). The hollow-ground blade flexes more easily and provides more feedback on the resistance the blade meets while cutting the hair, which is an indicator of blade sharpness. Hollow-ground blades are preferred by most barbers and some high-end razor manufacturers limit their production exclusively to hollow ground razors.


Blade width

The third and final category refers to blade width. The width of the blade is defined as the distance between the back of the blade and the cutting edge. It is expressed in units of eighth of an inch. The sizes vary from up to , rarely . A wider blade can carry more lather, much like a scoop, during multiple successive shaving strokes and thus it allows the user more shaving time and minimises blade rinse cycles. The disadvantage of the wider blade is that it is not as manoeuvrable as a narrower blade. A narrow blade can shave tight facial spots such as under the nose, but it must be rinsed more often. The most popular blade width size is . The width of the blade can also affect its sharpness. The wider the blade, the greater the thermal deformation that can occur due to changing temperatures, a fact that can lead to loss of edge sharpness.


Blade weight

The weight of the blade is inversely proportional to the pressure that is applied during shaving. The heavier the blade, the lighter the pressure that needs to be applied during shaving.


Length, stability, and balance

The degree of hollowness and thus the cross sectional area (thickness) of the blade vary depending on the grinding method used. Higher degree of hollowness in the blade implies a thinner cross section and this affects the stability (
bending In applied mechanics, bending (also known as flexure) characterizes the behavior of a slender structural element subjected to an external load applied perpendicularly to a longitudinal axis of the element. The structural element is assumed to ...
or
buckling In structural engineering, buckling is the sudden change in shape ( deformation) of a structural component under load, such as the bowing of a column under compression or the wrinkling of a plate under shear. If a structure is subjected to a ...
properties) of the blade; the thinner the blade the more flexible it is.Knife center Razor Sharpening And Using Tips (through Internet Archive)
quote: "The disadvantage of this second step without a ridge was, that the ultra thin biconcave blades were unstable in the direction perpendicular to the plane of the blade. Therefore the third step was to create a ridge parallel to the cutting edge, dividing the blade in two parts: an upper part between back and ridge, and a lower part between ridge and cutting edge. The ridge is created by grinding the raw triangular basic form with successive different wheel diameters: the greater wheel for the part between ridge and back; the smaller wheel for the part between ridge and cutting edge."
The length and weight of the blade and handle and their relation to each other determines the balance of the straight razor. The cutting area of the razor is proportional to the length of the blade, therefore, a longer blade requires less frequent honing since its cutting edge does not deplete as fast as that of a shorter blade.


Transverse stabiliser

For hollow-ground blades stability is augmented by a transverse stabiliser in the form of one or two narrow strips of thicker metal running from the back of the blade to the end of the shoulder (at the junction where the blade meets the shank). This piece, if present, is simply called the stabiliser (single or double) and indicates a hollow ground blade, since a flat ground blade is massive and stable enough to not need a stabiliser. A double stabiliser implies (full) hollow ground blade. The stabiliser protects the blade from torsional bending in the transverse direction (transverse spine).


Longitudinal stabiliser

In addition to the transverse stabiliser, a longitudinal stabiliser is sometimes created in the form of a ridge parallel to the cutting edge and the blade is ground in two areas or
bevel A bevelled edge (UK) or beveled edge (US) is an edge of a structure that is not perpendicular to the faces of the piece. The words bevel and chamfer overlap in usage; in general usage they are often interchanged, while in technical usage they ...
s, each with different degrees of hollowness or
curvature In mathematics, curvature is any of several strongly related concepts in geometry. Intuitively, the curvature is the amount by which a curve deviates from being a straight line, or a surface deviates from being a plane. For curves, the can ...
; the area between the back of the blade and the ridge is typically less hollow featuring a larger radius of curvature, also called the "belly", and the area between the ridge and the cutting edge which is more hollow i.e. with a smaller radius of curvature. These two beveled areas have different curvatures and in a well-made razor they transition seamlessly in the ridge (belly) and the cutting edge respectively. Sometimes there are three bevels. The ridge stabilizes the blade against torsional flexing in a direction perpendicular to its longitudinal axis by acting as a lengthwise spine for the blade. The distance between the ridge and the back of the blade is inversely proportional to the hollowness of the blade and is described in fractional terms in ascending steps of as, for example, hollow, hollow, or or (full hollow). Full hollow indicates that the stabilizing ridge is very close to the midsection of the blade and the farthest from the cutting edge compared to the other grades. This is considered the most expensive blade. At the highest end of hollow ground, more hollow than even the grade, is the so-called singing razor, so named because its blade produces a specific resonant tone when plucked, similar to a
guitar The guitar is a fretted musical instrument that typically has six strings. It is usually held flat against the player's body and played by strumming or plucking the strings with the dominant hand, while simultaneously pressing selected string ...
string String or strings may refer to: *String (structure), a long flexible structure made from threads twisted together, which is used to tie, bind, or hang other objects Arts, entertainment, and media Films * ''Strings'' (1991 film), a Canadian anim ...
, however such use is not recommended as it can distort the cutting edge.Classic shaving
The Thiers-Issard Story 28 Mar 2004 through the Internet Archive
Its manufacturing process is so demanding that a full 25% of the blades get rejected as not meeting standards.


Stability and sharpness

There is a tradeoff between stability and long term blade sharpness. A full hollow ground () blade can keep a very sharp edge even after a great number of honing cycles because of its high degree of hollowness but it is more susceptible to torsional bending because it is thinner. A partially hollow blade ( or for example) cannot sustain the same degree of sharpness for as long, because as the cutting edge erodes it can eventually reach the stabilising ridge faster where there is more material and thus the cutting-edge bevel cannot be maintained without excessive honing of the stabilising ridge to remove the additional material, which could also destabilise the rest of the blade. However, the partially hollow blade is more stable because its additional material makes it stiffer, and thus more resistant to deformation. In addition a flat ground blade, since by definition is not hollow (curved) at all, is the most stable of the blades but because its cross sectional area is the largest it also feels heavier than hollow ground and this can affect the feel and balance of the razor.


Balance

A razor is well balanced if when opened it balances about its pivot pin, indicating that the
torque In physics and mechanics, torque is the rotational equivalent of linear force. It is also referred to as the moment of force (also abbreviated to moment). It represents the capability of a force to produce change in the rotational motion of t ...
s about the pivot point, caused by the corresponding weight distributions of the blade and the handle about the pivot pin, counterbalance each other. A well-balanced razor is both safer to handle when open and easier to shave with.


Effects of blade geometry on performance

The characteristics of each blade type determine the type of recommended uses for each blade as well as their performance and maintenance routines. Each type has its own strengths and weaknesses depending on the requirements of use. Extra hollow blades such as singing blades are the thinnest and therefore they provide the best possible shave from all the other types. However they are also very flexible and therefore not suitable for tasks requiring increased pressure to the blade such as heavy
beard A beard is the hair that grows on the jaw, chin, upper lip, lower lip, cheeks, and neck of humans and some non-human animals. In humans, usually pubescent or adult males are able to grow beards. Throughout the course of history, societal a ...
growth etc. Care should also be taken when stropping so that the thin blade will not be overly stressed, since it cannot withstand abuse as well as lower grades. Flat ground razors are very stable and as such they can handle tough shaving jobs since they do not easily deform under pressure and they can take rough handling such as heavy stropping and honing. Although a wider blade is not as manoeuvreable as a narrower one, especially in tight spots, it is better to purchase a wider blade, since honing eventually reduces the width of the blade with use, a fact that can shorten the life of a straight razor with a narrow blade. On the other hand, the width of the blade is proportional to the blade distortion that can occur due to temperature fluctuations; this can lead to more frequent stropping and honing, because blade deformation due to
thermal stress In mechanics and thermodynamics, thermal stress is mechanical stress created by any change in temperature of a material. These stresses can lead to fracturing or plastic deformation depending on the other variables of heating, which include mat ...
can lead to loss of cutting edge sharpness.


Usage

Shaving is done with the blade at approximately an angle of thirty degrees to the skin and in a direction perpendicular to the edge; an incision requires the movement of the blade to be sideways or in a direction parallel to the edge. These circumstances are always avoided by the shaver, who always shaves in a direction perpendicular to the cutting edge of the blade. To be most effective, a straight razor must be kept extremely sharp. The edge is delicate, and inexpert use may bend or fold over the razor's edge. To unfold and straighten the microscopic sharp edge, one must
strop A razor strop or simply a strop (sometimes called a razor strap or strap) is a flexible strip of leather, canvas, denim fabric, balsa wood, or other soft material, used to straighten and polish the blade of a straight razor, a knife, or a woodwo ...
the blade on
leather Leather is a strong, flexible and durable material obtained from the tanning, or chemical treatment, of animal skins and hides to prevent decay. The most common leathers come from cattle, sheep, goats, equine animals, buffalo, pigs and ho ...
periodically. A 1979 comparative study of straight and electric razors, performed by Dutch researchers, found that straight razors shave hair approximately 2/1000 in. (0.05mm) shorter than electrics. To sharpen or finish the blade using a suspended strop, the razor is pushed toward the suspension ring while both the back and the cutting edge lie flat on the strop and with the back of the blade. No pressure should be applied on the cutting edge. A strop may be two sided with leather on one side and cloth on the other side. The cloth is used for blade alignment and sharpening. The leather is for finishing. The stropping process involves sliding the razor blade flat on the strop; upon reaching the end of the cloth or leather near the suspension ring, the blade is turned about its back (clockwise for a right-handed barber; counter-clockwise for a left-handed one) until the cutting edge touches the strop. It is then pulled toward the rectangular handle of the strop with back and cutting edge flat on the strop as before. The blade is moved in a slightly diagonal direction so to give every point of the edge a chance to touch the strop, without applying too much pressure. This process aligns the cutting edge properly with the back of the blade, avoiding "bumps" on the cutting edge. Rotating the blade on the strop about the cutting edge can damage it because such use will impact the micro-alignment of the edge. Depending on use and condition, the blade can be sharpened occasionally by using a razor hone. Strops prepared with pastes containing fine
grit Grit, Grits, or Gritty may refer to: Food * Grit (grain), bran, chaff, mill-dust or coarse oatmeal * Grits, a corn-based food common in the Southern United States Minerals * Grit, winter pavement-treatment minerals deployed in grit bins * ...
are also used for honing but are not recommended for the inexperienced user, as they can easily rake off the edge if they apply the wrong amount or exert too much pressure.premiumknives
"Some manufacturers do produce a professional abrasive in yellow, red, brown, black pastes/rouges or chalky white pastes, however these pastes can be difficult to use properly."
Some strops have a
linen Linen () is a textile made from the fibers of the flax plant. Linen is very strong, absorbent, and dries faster than cotton. Because of these properties, linen is comfortable to wear in hot weather and is valued for use in garments. It also ...
or
canvas Canvas is an extremely durable plain-woven fabric used for making sails, tents, marquees, backpacks, shelters, as a support for oil painting and for other items for which sturdiness is required, as well as in such fashion objects as handb ...
back. Shaving
soap Soap is a salt of a fatty acid used in a variety of cleansing and lubricating products. In a domestic setting, soaps are surfactants usually used for washing, bathing, and other types of housekeeping. In industrial settings, soaps are used ...
in a cup is traditionally lathered and applied using a rotating in-and-out motion of a shaving brush, usually made of
boar The wild boar (''Sus scrofa''), also known as the wild swine, common wild pig, Eurasian wild pig, or simply wild pig, is a suid native to much of Eurasia and North Africa, and has been introduced to the Americas and Oceania. The species is ...
or
badger Badgers are short-legged omnivores in the family Mustelidae (which also includes the otters, wolverines, martens, minks, polecats, weasels, and ferrets). Badgers are a polyphyletic rather than a natural taxonomic grouping, being united ...
bristles. In the heyday of straight razor shaving, wealthy users maintained a weekly "rotation" of seven razors to reduce wear on any one piece. Straight razors were often sold in special boxes of seven labelled for the days of the week.


Modern use

Straight razors are still manufactured. DOVO, of
Solingen Solingen (; li, Solich) is a city in North Rhine-Westphalia, Germany. It is located some 25 km east of Düsseldorf along the northern edge of the region called Bergisches Land, south of the Ruhr area, and, with a 2009 population of 161,3 ...
,
Germany Germany, officially the Federal Republic of Germany (FRG),, is a country in Central Europe. It is the most populous member state of the European Union. Germany lies between the Baltic and North Sea to the north and the Alps to the sou ...
, and Thiers Issard of
France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan ar ...
are two of the best-known European manufacturers. Boeker of Solingen is yet another cutlery manufacturer known for their straight razors. Wusthof and Henckels are two prominent knife manufacturers in Solingen who also produced straight razors. Thiers Issard and Hart Steel are famous for their decorated blades and their Damascus steel. Feather Safety Razor Co. Ltd. of
Osaka is a designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the third most populous city in Japan, following Special wards of Tokyo and Yokohama. With a population of ...
, Japan, makes a razor with the same form as a traditional straight, but featuring a disposable blade that can be installed through an injector-type system.
Artisan An artisan (from french: artisan, it, artigiano) is a skilled craft worker who makes or creates material objects partly or entirely by hand. These objects may be functional or strictly decorative, for example furniture, decorative art, ...
s also make handcrafted custom straight razors based on their own designs, the designs of their customers, or by finishing old blanks of blades. Modern straight-razor users are known to favor them for a variety of reasons. Some are attracted to the nostalgia of using old and traditional methods of shaving. Others wish to avoid the waste of disposable blades.motherearthnews
"..Shaving with a straight razor is a very simple idea that will preserve your face and, in some small measure, the environment, as well."
Still others argue that straight razors provide a superior shave through a larger blade and greater control of the blade, including the blade angle. Straight razors cover a much greater area per shaving stroke, because their cutting edge is much longer than any of the multi-blade razors. They also do not have to be rinsed as often, because their blade acts like a scoop and carries the lather on it during multiple shaving strokes, while the multi-blade razors are not nearly as efficient at such a task because of their considerably smaller blade geometry. Straight razors are also much easier to clean and can handle tougher shaving tasks, such as longer facial hair, than modern multi-blade razors, which tend to trap shaving debris between their tightly packed blades and are easily clogged, even with relatively short stubble.Safety razor Website
: "..it's a disposable razor or a permanent razor with disposable razor cartridges, the problem is that the defoliated whiskers get caught between the two blades of a twin-bladed razor, and no amount of rinsing can get them all out."
Weblog
"I am skeptical of this product, though, because the Mach 3 does clog up badly and the blades of the new razor are allegedly even closer together."
In addition, multi-edge razors can irritate the skin due to their multi-blade action, and this can lead to a condition known as pseudofolliculitis barbae, colloquially known as ''razor bumps''. One of the recommended actions for those so affected is to switch to single blade use.New Zealand Dermatological Society Incorporated
"When you resume shaving, use a single blade razor. Double blade razors cut the hairs too short allowing them to grow in."
Others simply like the good results and the satisfaction of maintaining the blade themselves. Yet others cite aesthetic reasons in addition to the practical ones. A well-made blade, in a nice handle with a well-crafted etching and decorated shank, carries a sense of craftsmanship and
ownership Ownership is the state or fact of legal possession and control over property, which may be any asset, tangible or intangible. Ownership can involve multiple rights, collectively referred to as title, which may be separated and held by different ...
difficult to associate with a disposable blade cartridge. Finally, a well-kept razor can last for decades, and can become a family
heirloom In popular usage, an heirloom is something that has been passed down for generations through family members. Examples are a Family Bible, antiques, weapons or jewellery. The term originated with the historical principle of an heirloom in ...
that can be passed from parent to child. For all of these reasons, devotees of the straight razor make for an active market. Owing to health concerns, some areas require barbers who provide straight-razor shaving to use a version that employs a disposable or changeable blade system. In this type of straight razor the razor blade is changed and disposed of after each service. Various jurisdictions in Australia,
Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tota ...
,
New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 List of islands of New Zealand, smaller islands. It is the ...
,
Turkey Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a list of transcontinental countries, transcontinental country located mainly on the Anatolia, Anatolian Peninsula in Western Asia, with ...
and the
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five ma ...
, however, permit the professional use of straight razors.STATE BOARD OF BARBER EXAMINERS of Pennsylvania via the Internet Archive
/ref>
September 16, 1990
TEXAS DEPARTMENT OF LICENSING AND REGULATION
The 2012 James Bond film, ''
Skyfall ''Skyfall'' is a 2012 spy film and the twenty-third in the ''James Bond'' series produced by Eon Productions. The film is the third to star Daniel Craig as fictional MI6 agent James Bond and features Javier Bardem as Raoul Silva, the vill ...
,'' has renewed interest in straight razors due to a scene when the agent shaves with one and his co-star Naomie Harris helps him finish shaving while remarking that “sometimes the old ways are the best”. Online straight razor retailers have reported increased sales ranging from 50% to over 400% due to the exposure generated by the film. The increase in sales is part of an overall growth in demand for straight razors, since about 2008, which has also seen an increase in the number of barbers offering straight razor shaves. The phenomenon seems to be driven by renewed nostalgia for things retro such as the straight razor which evokes simpler notions of the past such as the "macho" image associated with its use and also the skill required to shave with it which can be a source of pride.


Cost

As compared to the disposable and cartridge razors, straight razors are more economical, despite a higher initial cost, because if properly cared for, no additional cost is incurred, as compared to disposable razors where new cartridges must be periodically procured.


Environment

Straight razors are more environmentally friendly than other types of razors since the latter come with packaging that may have to be thrown away along with the razors, and, in the case of electric razors, batteries that are typically disposed of after they expire. Straight razors produce no waste and they require only a strop for honing.


Handling and honing

The various straight razor honing and stropping directions and handling techniques are illustrated by the drawings below. File:Razor honing from page 21 of Essay on barbers' razors, razor honing.jpg, Razor honing directions on a whetstone Image from page 20 of "Essay on barbers' razors, razor hones, razor strops and razor honing .." (1895) (14581592817).jpg, Razor honing directions on a whetstone diagonally File:Image from page 30 of "Essay on barbers' razors, razor hones, razor strops and razor honing .." (1895) (14765706624).jpg, Razor handling technique File:Testing edge after honing.jpg, Testing edge after honing by pushing the cutting edge on a moist nail to test its grip File:Stropping technique.jpg, Stropping technique on a hanging strop File:Testing edge after stropping.jpg, Testing edge after stropping by touching the cutting edge with a finger File:Zur Kunst sich zu rasiren.png, Representation of shaving with a straight razor from a book about the art of shaving from 1846 File:Rasoir à rabot de Perret.jpg, Paris ca. 1760, the first ''safety'' straight razor invented by French master cutler Jean-Jacques Perret From 1760, the first ''safety'' 'straight razor' appeared for men to safely shave their beard, invented by the French master cutler in Paris and author of ''La pogonotomie, ou L'art d'apprendre à se raser soi-même'' ( Pogonotomy, or The Art of Learning to Shave Oneself).


References

{{DEFAULTSORT:Straight Razor Hygiene Razors