Metal bondage is bondage

Bondage (BDSM)

Bondage is the use of restraints for the sexual pleasure of the parties involved. It may be used in its own right, as in the case of rope bondage and breast bondage, or as part of sexual activity or BDSM activity.- Private bondage :...

 involving the use of metal

Metal

A metal , is an element, compound, or alloy that is a good conductor of both electricity and heat. Metals are usually malleable and shiny, that is they reflect most of incident light...

 apparatuses to restrain a submissive as part of BDSM

BDSM

BDSM is an erotic preference and a form of sexual expression involving the consensual use of restraint, intense sensory stimulation, and fantasy power role-play. The compound acronym BDSM is derived from the terms bondage and discipline , dominance and submission , and sadism and masochism...

 activities. In contrast to the use of rope

Rope bondage

Rope bondage is bondage involving the use to rope to tie and wrap the body as part of BDSM activities.Most modern rope bondage techniques derive from the erotic Japanese bondage art form of shibari, which was in turn developed from the now-defunct Japanese military restraint technique of...

 to secure a body, metal bondage normally requires careful preparation, since more extravagant devices have either to be built or bought from a specialist. The range of devices can vary significantly, from simple handcuffs

Handcuffs

Handcuffs are restraint devices designed to secure an individual's wrists close together. They comprise two parts, linked together by a chain, a hinge, or rigid bar. Each half has a rotating arm which engages with a ratchet that prevents it from being opened once closed around a person's wrist...

 or chain

Chain

A chain is a sequence of connected links.Chain may also refer to:Chain may refer to:* Necklace - a jewelry which is worn around the neck* Mail , a type of armor made of interlocking chain links...

s to specifically designed chairs or complex bar linkages. Chains are occasionally preferred for suspension due to their strong nature and ability to hold large amounts of weight including various other objects on top of the person being suspended. Because they feel cold to touch and rattle and clank chains add auditory and tactile sensory stimulation to the bondage scene, and can similarly be used to enhance the atmosphere of a dungeon.