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Glossary
of Metalcraft Terms
Smith
Apprentice Ademar
ALLOY STEEL -- Iron and various elements mixed to give
the iron permanent characteristic changes. Carbon content or
heat treating qualities will vary according to the mix.
ANNEAL -- The
process of using suitable temperatures and cooling to produce
the softest state possible in metal and to reduce as much internal
stress as possible in any given piece of iron or steel.
ANVIL TOOL --
Any tool that is installed on, or inserted into, an anvil to
perform special services that are not practical if performed
on the anvil alone, a tool that can be held in or on the anvil
instead of in the blacksmith's hand.
BAR STOCK --
See stock.
BILLET -- Any
piece of iron or steel that is round or square in cross section
and is not less than 1 inch in cross section and not more than
12 inches long.
BITE -- The
amount of the opening and the shape of the portions of the jaws
of a tong that actaully holds the piece to be worked on. For
example, the tongs have a long bite, a short bite, sharp bite,
or good bite.
BLADE -- The
cutting portion of any tool such as a knife, a shovel, or a garden
hoe.
BLANK -- Any
piece of metal or part thereof that is ready, without further
treatment, to be shaped into a final product.
BOLSTER -- A
piece of steel that is to be placed on the anvil or held in the
vise and that contains one or more holes of a specified size
and shape. It may be used to finish the shaping of a tenon by
driving the tenon into the hole or holes.
BOW -- In tongs
this is the circular shaped portion of the jaws of the tongs
between the bite and the hinge. This is usually built in to increase
springiness or to provide for extra capacity behind the bite.
In shackles this is the circular shaped portion of the shackle
between the eyes.
BUMP -- To bend
or reshape a whole product without disfiguring any specific portion
of it by using a hammer, considerably heavier than usual, in
a gentle manner.
CAKING QUALITY
-- A quality of powdered or finely ground coal that causes it
to stick or cake together and hold its shape. This quality is
very helpful in making coke.
CARBON STEEL
-- Steel that contains carbon added to increase its hardening
ability. In general the American Society for Metals considers
steel with less than 0.30 percent carbon to be low carbon; 0.30
percent to 0.50 percent carbon is high carbon.
CARBON-ALLOY STEEL
-- A combination of carbon and any of various alloy components
in the steel.
CHOKE --To grip
a hammer handle close to the hammerhead or to grip the reins
of tongs close to the hinge.
CIRCUMFERENCE --The
distance around any circle.
CLINKER -- Noncombustible,
nongaseous material in the coal that has melted down and formed
a dough like mass over the grate of the tuyere. When a clinker
cools below a molten state, it becomes a brittle solid mass.
COKE -- A brittle,
lightweight material, nearly pure carbon, that remains after
the volatiles and most of the non combustibles have been removed
from coal. You make coke in your forge as you burn green coal.
COLD-CUT --
A hardy or chisel made for cutting cold iron or steel.
CRIMP -- A bend
in metal, so sharp at the apex that it cannot successfully be
forged out. It may be large or small and is to be avoided in
all blacksmith work.
CRITICAL POINT TEMPERATURE -- That temperature at which iron and steels lose
their magnetic attraction. This is a very important temperature
used in heat treating of iron and steels. It lies within a very
narrow temperature range.
CUTTING PLATE
-- A large, fiat piece of metal, made of iron, steel, or nonferrous
metal, that is placed on top of the anvil face to protect the
anvil from injury when hot or cold cutting is done.
CUT WASHER --
A flat washer left in the raw state after it has been punched
out of the parent sheet stock. It is usually oversized to allow
for variation in stock size of bolts and rivets.
DIAMETER --
The distance across the exact center of a circle.
DRAW DOWN --
To reduce diameter or thickness.
DRAW OUT A POINT
-- To forge a point on the end of a rod or a bar.
DRAW THE TEMPER
--To temper to a desired hardness or to reduce hardness.
DRESS -- To
smooth and refine the work.
DRIBBLE CAN
-- A small tin can nailed to a wooden handle. The can has one
& penny nail hole in the left edge. It is used to dribble
water on unwanted hot spots on the iron while the iron is in
the fire.
ENDO -- To move
something end ways only. To strike one end of a bar while the
other end is resting on the anvil to cause all energy to travel
the length of the bar only.
EYEBALL -- To
look something over, usually to estimate its size or shape.
FLY ASH -- The
dusty particles of ash, cinder, and dirt that go into the air
from the forge.
FULLER -- The
process of forming an indentation during the forging process
in order to move metal one way only. A tool for performing the
fullering process.
HAND HAMMER --
Any hammer with a head weight of 4 pounds or less, designed to
be held in one hand.
HAND TOOL --
Any tool held in the hand.
HARDY TOOL --
Any tool held in the hardy hole of the anvil.
HEADER -- A
tool designed to receive the shank of a rivet or nail so that
a head can be hammered onto the rivet.
HEAT -- That
portion of metal that is to be heated or is already heated to
forging temperatures. 'To make a heat' means to heat a work piece
to forging temperature.
HOLDING HAND
-- The hand that the smith uses to hold his work piece or tongs
while he is working at the anvil or at the fire.
IRON -- Any
iron or steel.
KITCHEN FAT
-- The fat drippings from meat or fowl that has been strained
and is free of water.
LINCH PIN --
A form of cotter pin, usually made of flat stock and usually
several times as wide as it is thick. It is designed to be used
repeatedly.
LINCHPUNCH --
A hot-punch shaped with an elongated flat nose or point. It is
designed to punch narrow elongated holes in round stock to receive
a linchpin.
MILD STEEL --
See steel.
NORMALIZE --
To allow a piece of steel or iron to cool slowly from forging
heat to room temperature in the atmosphere. This process relieves
internal stresses caused by forging. It is not the same as annealing.
QUENCH -- To
immerse hot iron in a liquid, usually water. The water or oil
used as a coolant.
RADIUS -- One
half the diameter of a circle, the distance from the center of
any circle to its edge. "The radius" is the name given
to the rounded edge of an anvil. The anvil is ground or filed
to the smith's need. The radius avoids producing anvil scars
or cuts on the inside of an over-theedge bend.
REIN -- A somewhat
archaic name for the handles of blacksmith's tongs or pliers.
SLUG DRIFT --
A drift of a specified accurate size with a short, slight entrance
taper on each end. It is used for dressing holes to an exact
size.
SOAK -- To soak
a piece in the fire means holding it at a given temperature for
an extended length of time to allow the heat to become the same
internally and externally.
SPRINKLE CAN
-- A tin can with about five or six holes punched in the bottom.
It is attached to a handle and is used to sprinkle down the fire.
STEEL -- Any
of the purified iron and iron alloys available today.
STOCK -- The
metal from which an object will be made.
SWAGE -- A tool
used for working metal, hot or cold. The metal may be hammered
into the swage or hammered down to fit over it.
SWAGE BLOCK
-- A perforated cast iron or steel block with grooved sides.
It is used in heading bolts and rivets and for shaping bars or
flat metal by hand work.
TANG -- The
nail-shaped end of a chisel, file, or other tool. The tang is
usually driven into a wooden handle.
TONGUE -- A
flattened projection thinner than the main stock.
TOOL STEEL --
Any combination of carbon and alloy components.The combination
will depend on the requirements for the tool.
VAPOR BLANKET
-- The steam or gas or both created around a piece of hot metal
when the metal is dipped in water or oil. |