Shear line - Revision history

Datagram at 17:32, 27 January 2010

2010-01-27T17:32:01Z

← Older revision		Revision as of 17:32, 27 January 2010
Line 16:		Line 16:
	In [[disc-detainer]] locks:		In [[disc-detainer]] locks:
	:* The lock opens once the sidebar does not obstruct the shear line.		:* The lock opens once the sidebar does not obstruct the shear line.

			__NOTOC__

	== Virtual Shear Lines ==		== Virtual Shear Lines ==

Datagram at 17:31, 27 January 2010

2010-01-27T17:31:51Z

← Older revision		Revision as of 17:31, 27 January 2010
Line 20:		Line 20:

	The use of [[Master_Key\|master keying]] creates virtual shear lines. The number of virtual shear lines is a count of possible arrangements of components that allow the lock to be opened. In a normal pin-tumbler mechanism with no master keying, there is only one possible combination of components. As additional pins are added to chambers the number of possible shear lines increases exponentially. A higher number of virtual shear lines reduces the pick and [[impressioning]] resistance of the lock cylinder.		The use of [[Master_Key\|master keying]] creates virtual shear lines. The number of virtual shear lines is a count of possible arrangements of components that allow the lock to be opened. In a normal pin-tumbler mechanism with no master keying, there is only one possible combination of components. As additional pins are added to chambers the number of possible shear lines increases exponentially. A higher number of virtual shear lines reduces the pick and [[impressioning]] resistance of the lock cylinder.

			== Gallery ==

			<div align="center"><gallery>
			File:Duo_aligned.jpg\|[[Wafer]]s properly aligned at the shear line.
			</gallery></div>

	== See also ==		== See also ==

Datagram: De stubbing!

2009-10-20T17:38:11Z

De stubbing!

← Older revision		Revision as of 17:38, 20 October 2009
Line 3:		Line 3:
	[[File:Schlage_Everest_pins_aligned.jpg\|thumb\|right\|text-top\|200px\|A [[plug]] with the [[pin-tumbler]]s properly aligned at the shear line.]]		[[File:Schlage_Everest_pins_aligned.jpg\|thumb\|right\|text-top\|200px\|A [[plug]] with the [[pin-tumbler]]s properly aligned at the shear line.]]

	The '''shear line''' is the physical point at which the [[~~Plug\|~~plug]] meets the [[~~Cylinder\|~~cylinder]] inside a cylinder-based [[~~Lock\|~~lock]]. This point is where components must be properly aligned to allow the plug to rotate and lock or unlock the lock.		The '''shear line''' is the physical point at which the [[plug]] meets the [[cylinder]] inside a cylinder-based [[lock]]. This point is where components must be properly aligned to allow the plug to rotate and lock or unlock the lock.

	In [[~~Pin_tumbler\|~~pin-tumbler]] locks:		In [[pin-tumbler]] locks:
	:* The lock opens once all top and bottom pins are separated at the shear line.		:* The lock opens once all top and bottom pins are separated at the shear line.
	:* [[Lockpicking]] exploits tolerance errors in the lock to allow pin pairs to be individually separated at the shear line until the lock opens.		:* [[Lockpicking]] exploits tolerance errors in the lock to allow pin pairs to be individually separated at the shear line until the lock opens.
	:* [[Comb_Pick\|Comb picks]] attempts to move all pin stacks above the shear line to allow free rotation of the plug.		:* [[Comb_Pick\|Comb picks]] attempts to move all pin stacks above the shear line to allow free rotation of the plug.
	:* [[~~Bumping\|~~Key bumping]] attempts to momentarily separate pin pairs at the shear line to allow free rotation of the plug.		:* [[Key bumping]] attempts to momentarily separate pin pairs at the shear line to allow free rotation of the plug.

	In [[~~Wafer\|~~wafer]] locks:		In [[wafer]] locks:
	:* The lock opens once wafers do not obstruct the shear line.		:* The lock opens once wafers do not obstruct the shear line.

			In [[disc-detainer]] locks:
			:* The lock opens once the sidebar does not obstruct the shear line.

	== Virtual Shear Lines ==		== Virtual Shear Lines ==

	The use of [[Master_Key\|master keying]] creates virtual shear lines. The number of virtual shear lines is a count of possible arrangements of components that allow the lock to be opened. In a normal pin-tumbler mechanism with no master keying, there is only one possible combination of components. As additional pins are added to chambers the number of possible shear lines increases exponentially. A higher number of virtual shear lines reduces the pick resistance of the lock cylinder.		The use of [[Master_Key\|master keying]] creates virtual shear lines. The number of virtual shear lines is a count of possible arrangements of components that allow the lock to be opened. In a normal pin-tumbler mechanism with no master keying, there is only one possible combination of components. As additional pins are added to chambers the number of possible shear lines increases exponentially. A higher number of virtual shear lines reduces the pick and [[impressioning]] resistance of the lock cylinder.

	== See also ==		== See also ==
Line 24:		Line 27:
	* [[Key]]		* [[Key]]
	* [[Master_Key\|Master Keying]]		* [[Master_Key\|Master Keying]]

	~~{{Stub}}~~

	[[Category:Locks]]		[[Category:Locks]]

Datagram at 22:50, 23 July 2009

2009-07-23T22:50:19Z

← Older revision		Revision as of 22:50, 23 July 2009
Line 1:		Line 1:
	=Shear Line=		=Shear Line=

			[[File:Schlage_Everest_pins_aligned.jpg\|thumb\|right\|text-top\|200px\|A [[plug]] with the [[pin-tumbler]]s properly aligned at the shear line.]]

	The '''shear line''' is the physical point at which the [[Plug\|plug]] meets the [[Cylinder\|cylinder]] inside a cylinder-based [[Lock\|lock]]. This point is where components must be properly aligned to allow the plug to rotate and lock or unlock the lock.		The '''shear line''' is the physical point at which the [[Plug\|plug]] meets the [[Cylinder\|cylinder]] inside a cylinder-based [[Lock\|lock]]. This point is where components must be properly aligned to allow the plug to rotate and lock or unlock the lock.

Datagram at 15:56, 15 June 2009

2009-06-15T15:56:21Z

← Older revision		Revision as of 15:56, 15 June 2009
Line 22:		Line 22:
	* [[Key]]		* [[Key]]
	* [[Master_Key\|Master Keying]]		* [[Master_Key\|Master Keying]]

			{{Stub}}

	[[Category:Locks]]		[[Category:Locks]]

Datagram at 16:52, 3 March 2009

2009-03-03T16:52:05Z

← Older revision		Revision as of 16:52, 3 March 2009
Line 1:		Line 1:
	=Shear Line=		=Shear Line=

	The shear line is the physical point at which the [[Plug\|plug]] meets the [[Cylinder\|cylinder]] inside a cylinder-based [[Lock\|lock]]. This point is where components must be properly aligned to allow the plug to rotate ~~freely to~~ lock or unlock the lock.		The '''shear line''' is the physical point at which the [[Plug\|plug]] meets the [[Cylinder\|cylinder]] inside a cylinder-based [[Lock\|lock]]. This point is where components must be properly aligned to allow the plug to rotate and lock or unlock the lock.

	In [[Pin_tumbler\|pin-tumbler]] locks:		In [[Pin_tumbler\|pin-tumbler]] locks:
Line 17:		Line 17:

	== See also ==		== See also ==
			* [[Plug]]
			* [[Cylinder]]
	* [[Lock]]		* [[Lock]]
	* [[Key]]		* [[Key]]

Datagram at 23:25, 16 January 2009

2009-01-16T23:25:26Z

← Older revision		Revision as of 23:25, 16 January 2009
Line 1:		Line 1:
	=Shear Line=		=Shear Line=

	The shear line is the physical point at which the [[Plug\|plug]] meets the [[Cylinder\|cylinder]] inside a cylinder-based [[Lock\|lock]]. This point is where components must be ~~proper~~ aligned to allow the plug to rotate freely to lock or unlock the lock.		The shear line is the physical point at which the [[Plug\|plug]] meets the [[Cylinder\|cylinder]] inside a cylinder-based [[Lock\|lock]]. This point is where components must be properly aligned to allow the plug to rotate freely to lock or unlock the lock.

	In [[Pin_tumbler\|pin-tumbler]] locks:		In [[Pin_tumbler\|pin-tumbler]] locks:
Line 14:		Line 14:
	== Virtual Shear Lines ==		== Virtual Shear Lines ==

	The use of [[Master_Key\|master keying]] creates virtual shear lines. ~~Virtual~~ shear lines is a count of possible arrangements of components that allow the lock to be opened. In a normal pin-tumbler mechanism with no master keying, there is only one possible combination of components. As additional pins are added to chambers the number of possible shear lines increases exponentially.		The use of [[Master_Key\|master keying]] creates virtual shear lines. The number of virtual shear lines is a count of possible arrangements of components that allow the lock to be opened. In a normal pin-tumbler mechanism with no master keying, there is only one possible combination of components. As additional pins are added to chambers the number of possible shear lines increases exponentially. A higher number of virtual shear lines reduces the pick resistance of the lock cylinder.

	A higher number of virtual shear lines ~~drastically~~ reduces the pick resistance of the lock cylinder.

	== See also ==		== See also ==

Datagram at 18:04, 15 January 2009

2009-01-15T18:04:43Z

← Older revision		Revision as of 18:04, 15 January 2009
Line 3:		Line 3:
	The shear line is the physical point at which the [[Plug\|plug]] meets the [[Cylinder\|cylinder]] inside a cylinder-based [[Lock\|lock]]. This point is where components must be proper aligned to allow the plug to rotate freely to lock or unlock the lock.		The shear line is the physical point at which the [[Plug\|plug]] meets the [[Cylinder\|cylinder]] inside a cylinder-based [[Lock\|lock]]. This point is where components must be proper aligned to allow the plug to rotate freely to lock or unlock the lock.

	In [[~~Pin-tumbler~~\|pin-tumbler]] locks:		In [[Pin_tumbler\|pin-tumbler]] locks:
	:* The lock opens once all top and bottom pins are separated at the shear line.		:* The lock opens once all top and bottom pins are separated at the shear line.
	:* [[Lockpicking]] exploits tolerance errors in the lock to allow pin pairs to be individually separated at the shear line until the lock opens.		:* [[Lockpicking]] exploits tolerance errors in the lock to allow pin pairs to be individually separated at the shear line until the lock opens.

Datagram at 18:02, 15 January 2009

2009-01-15T18:02:40Z

New page

=Shear Line=

The shear line is the physical point at which the [[Plug|plug]] meets the [[Cylinder|cylinder]] inside a cylinder-based [[Lock|lock]]. This point is where components must be proper aligned to allow the plug to rotate freely to lock or unlock the lock.

In [[Pin-tumbler|pin-tumbler]] locks:
:* The lock opens once all top and bottom pins are separated at the shear line.
:* [[Lockpicking]] exploits tolerance errors in the lock to allow pin pairs to be individually separated at the shear line until the lock opens.
:* [[Comb_Pick|Comb picks]] attempts to move all pin stacks above the shear line to allow free rotation of the plug.
:* [[Bumping|Key bumping]] attempts to momentarily separate pin pairs at the shear line to allow free rotation of the plug.

In [[Wafer|wafer]] locks:
:* The lock opens once wafers do not obstruct the shear line.

== Virtual Shear Lines ==

The use of [[Master_Key|master keying]] creates virtual shear lines. Virtual shear lines is a count of possible arrangements of components that allow the lock to be opened. In a normal pin-tumbler mechanism with no master keying, there is only one possible combination of components. As additional pins are added to chambers the number of possible shear lines increases exponentially.

A higher number of virtual shear lines drastically reduces the pick resistance of the lock cylinder.

== See also ==
* [[Lock]]
* [[Key]]
* [[Master_Key|Master Keying]]

[[Category:Locks]]