MACS: Difference between revisions
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The '''Maximum Adjacent Cut Specification''' (or '''MACS''') of a [[lock]] is the maximum variance of component sizes between two adjacent components. This term is primarily used in [[pin-tumbler]] and [[wafer]] locks to define restrictions on the number of real key [[differs]] to ensure the proper operation of the lock. Failure to abide by the MACS can make [[key]]s difficult to insert or remove from a lock, potentially even causing [[back cutting]]. | The '''Maximum Adjacent Cut Specification''' (or '''MACS''') of a [[lock]] is the maximum variance of component sizes between two adjacent components. This term is primarily used in [[pin-tumbler]] and [[wafer]] locks to define restrictions on the number of real key [[differs]] to ensure the proper operation of the lock. Failure to abide by the MACS can make [[key]]s difficult to insert or remove from a lock, potentially even causing [[back cutting]]. | ||
__NOTOC__ | |||
== Calculating MACS == | == Calculating MACS == | ||
:''See also: [[Differs#|Differs (Including MACS Restrictions)'' | :''See also: [[Differs#Including_MACS_restrictions|Differs (Including MACS Restrictions)]]'' | ||
The MACS of given keying system is calculated based on the design parameters of the key and component sizes, particularly the number of components, their spacing, and how many total depths are available. The formula for calculating MACs is: | The MACS of given keying system is calculated based on the design parameters of the key and component sizes, particularly the number of components, their spacing, and how many total depths are available. The formula for calculating MACs is: | ||
MACS = ([pin spacing]-[cut root])/([depth increment](tan([cut angle]/2)))<ref>{{Ref pulford}}</ref> | MACS = ([pin spacing]-[cut root])/([depth increment](tan([cut angle]/2)))<ref>{{Ref pulford}}</ref> | ||
== References == | |||
<references /> | |||
== See also == | == See also == | ||
Latest revision as of 18:12, 12 February 2010
Maximum Adjacent Cut Specification
The Maximum Adjacent Cut Specification (or MACS) of a lock is the maximum variance of component sizes between two adjacent components. This term is primarily used in pin-tumbler and wafer locks to define restrictions on the number of real key differs to ensure the proper operation of the lock. Failure to abide by the MACS can make keys difficult to insert or remove from a lock, potentially even causing back cutting.
Calculating MACS
- See also: Differs (Including MACS Restrictions)
The MACS of given keying system is calculated based on the design parameters of the key and component sizes, particularly the number of components, their spacing, and how many total depths are available. The formula for calculating MACs is:
MACS = ([pin spacing]-[cut root])/([depth increment](tan([cut angle]/2)))[1]
References
- ↑ PULFORD, Graham (2007). High Security Mechanical Locks: An Encyclopedic Reference. ISBN 0750684372.
See also
 |
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