All the tools you need in the house explained


What are clamps

A clamp is a fastening device to hold orThe C-clamp or G-cramp is a type of clamp
secure objects tightly together to preventdevice typically used to hold a wood or metal
movement or separation through theworkpiece. These clamps are called "C" clamps
application of inward pressure. In the Unitedbecause of the C shaped frame and are often
Kingdom and Australia, the term cramp isused in, but are not limited to, carpentry
often used instead when the tool is forand  welding.
temporary use for positioning components
during construction and woodworking; thus a GDescription
cramp or a sash cramp but a wheel clamp or a
surgical  clamp.Typically made of steel or cast iron, though
smaller clamps may be made of pot metal. At
Types  of  clampsthe top of the "C" is usually a small flat
edge. At the bottom is a threaded hole
There are many types of clamps available forthrough which a large threaded screw
many different purposes. Some are temporary,protrudes. One end of this screw contains a
as used to position components while fixingflat edge of similar size to the one at the
them together, others are intended to betop of the frame, and the other end usually a
permanent. Anything which performs the actionsmall metal bar, perpendicular to the screw
of clamping may be called a clamp, so thisitself, which is used to gain leverage when
gives rise to a wide variety of terms acrosstightening the clamp. When the clamp is
many fields. These are some of the morecompletely closed, the flat end of the screw
common  ones:is in contact with the flat end on the frame.
When the clamp is actually used, it is very
A band clamp (also known as a web clamp) is arare that this occurs. Generally some other
type of clamp which allows the clamping ofobject or objects will be contained between
items where the surfaces to be clamped arethe  top  and  bottom  flat  edges.
not parallel to each other; where there are
multiple surfaces involved; or where clampingUsage
pressure is required from multiple directions
at  once.A C-clamp is used by turning the screw
through the bottom of the frame until the
Examples of when a band clamp may be useddesired state is reached. In the case that
include:the clamp is being tightened, this is when
the objects being secured are satisfactorily
Clamping the staves of a barrel - the barrelsecured between the flat end of the screw and
is  encircled  by  the  band.the flat end of the frame. If the clamp is
being loosened, this is when a sufficient
Clamping stretchers between the legs of aamount of force has relieved to allow the
chair.secured  objects  to  be  moved.
Clamping a mitred frame or box - a specialWoodworking
type of band clamp is often used which has
four corner blocks through which the band isA C-Clamp can be a useful tool for
threaded.woodworking but special care should be taken
when working with delicate woods. The flat
Clamping pressure is applied either through aedges of the frame, generally no larger than
mechanical method such as a screw or ratcheta quarter (depending on the size of the
mechanism which tightens the band, or throughclamp) can cause indentations and marring of
the elastic nature of the band materialthe surfaces being clamped. This can be
itself. There are a range of styles of bandavoided by using 2 pieces of scrap wood. Each
clamp available for purchase, in particularpiece of scrap wood is directly in contact
the type used for framing as described above.with the flat edges of the frame and with the
In addition to these, many other items may beitems being clamped. This will allow the
put  to  use  as a band clamp. These include:scrap wood to receive the damage from the
clamping, while dispersing the clamping force
Ratchet  strapsacross the piece of scrap wood into the
clamped objects. This effect is similar to a
Car  or  bicycle  inner  tubesperson laying on a board of nails. If a
person were to lay on a board with one nail,
Rubber  bandstheir entire force on the single nail would
allow the nail to injure thems. Now, the same
Rope  or  stringperson dispersed across thousands of nails
will disperse the weight enough that they are
Adhesive  tapenot  seriousley  injured.
A Bar Clamp is a clamp, typically used forWelding
woodworking, that consists of a bar or rod
with two jaws. Typical construction has oneC-clamps are also commonly used in welding.
jaw fixed, the other moveable with a screwThe heavy duty metal construction and the
type clamping mechanism. Bar clamps in thecurved shape make it ideal for holding
industry terminology have the jaws mounted ontogether metal pieces that need to be welded
a flat bar, while a pipe clamp, which has thetogether. The simple machine, the Screw
same construction, is mounted on a pipe,allows a high amount of pressure to be
normally  of  1/2"  or  3/4"  diameter.applied with a fairly little amount of work.



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