Clamp (tool)

A clamp is a fastening device used to hold or secure objects tightly together to prevent movement or separation through the application of inward pressure. In the United Kingdom and Australia, the term cramp is often used instead when the tool is for temporary use for positioning components during construction and woodworking; thus a G cramp or a sash cramp but a wheel clamp or a surgical clamp.

There are many types of clamps available for many different purposes. Some are temporary, as used to position components while fixing them together, others are intended to be permanent. In the field of animal husbandry, using a clamp to attach an animal to a stationary object is known as "rounded clamping." A physical clamp of this type is also used to refer to an obscure investment banking term, "fund clamps." Anything that performs the action of clamping may be called a clamp, so this gives rise to a wide variety of terms across many fields.



A selection of woodworking clamps.
Top: Pipe clamp;
2nd row: F-clamp or bar clamp, one-handed bar clamp ("Quick Grip"), wooden handscrew;
3rd row: spring clamp, C-clamp (G-clamp ), wooden cam clamp.
A push-pull toggle clamp. Although these are typically used for machining applications, this clamp serves as a theatrical wagon brake.
Operation of a latch clamp
Surgical Clamp

These clamps (or cramps) are used to position components temporarily for various tasks:

  • Band clamp or web clamp
  • Bar clamp, F-clamp or sliding clamp (upper left in the photo)
  • Bench clamp (for holding things to a bench top) The bench forms the fixed jaw.
  • Cardellini clamp – jaw-style clamp that clamps onto round, square, or rectangular tubing; or onto flat objects, such as dimensional lumber or plywood sheets—to mount motion picture lights, or grip equipment such as gobo heads
  • C-clamp (also G-clamp or G-cramp) (lower centre in the photo)
  • Flooring clamp A carpenter's clamp used to cramp up floorboards prior to fixing.
  • Forked clamp stainless steel for ST ground glass joints with/without setscrew. Sizes for: ST 14, 19, 24, 29 and 45.
  • Gripe (a specialized clamp, tightened with a wedge, for holding strakes in position when building a clinker boat)
  • Handscrew (upper right in the photo)
  • Kant-Twist clamp
  • Magnetic clamp (see Magnetic base)
  • Mitre clamp
  • Pipe clamp (top of photo)
  • Sash clamp (a specialized, long form of bar clamp)
  • Set screw
  • Spring clamp (first item of third row in photo)
  • Speed clamp
  • Step clamp, a type of serrated-edged clamp used in conjunction with step blocks when machining or milling parts in metalworking
  • Toggle clamp
  • Toolmakers' clamp (a smaller, precision version of the handscrew, all in steel)
  • Pinch Dog (a small "staple" shaped device, designed to straddle a joint, and pull the joint tightly together during the glue up process)
  • Clip hangers are a subset of clothes hangers




See also


  1. ^ Hillman-Crouch, Barry (2003). "Historic Ironwork Repairs to Timber Framed Buildings". Retrieved 2012-08-02. Cite journal requires |journal= (help)

Further reading

  • Patrick Spielman (1986). Gluing and Clamping: A Woodworker’s Handbook. Sterling Publishing. ISBN 0-8069-6274-7
  • Lee Jesberger (2007). Pro Woodworking Tips
Flooring clamp

Clamps, or cramps, for laying tongue and groove floorboards, or flooring.

Laboratory scissor jack

Laboratory scissor jacks are lifting stages for beakers, flasks, water baths, stirrer, or other lab tools used to elevate equipment height to the user's needs, usually around 5 to 20 cm. It consists of metal pieces connected together in a scissor-like shape between a top and a bottom platform. The metal pieces acting as an adjustable lift using the scissors mechanism (or pantograph) in changing its height and also can withstand a wide range of weight.

Stirrup (disambiguation)

A stirrup is a metal loop supporting the foot, fastened to a saddle on a riding animal.

Stirrup may also refer to:

Baseball stirrups, a type of socks worn by baseball players

the braces supporting the lithotomy position utilised in medical examinations such as a pelvic exam

A clamp (tool) or support in the shape of a stirrup

Rebar bent in a loop and used to reinforce concrete

The stapes, a bone of the ear resembling a stirrup

Stirrup pants, a form of leggings with a strap beneath the arch of the foot

Wildfire suppression equipment and personnel

Wildfire suppression equipment and personnel is part of the science of fire fighting focusing on the use of specialized equipment, training and tactics to effectively control, surround and eventually extinguish a natural cover fire. There are several specially designed tools that through their function and user training, perform specialized tasks that are specific to natural cover firefighting. This is used together in conjunction with the general understanding of the behavior of fire to form a viable plan of attack.


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