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Case celebrated the 10th Anniversary of the CopperLock in 2007. This pattern was retired to the Case XX Vault in July 2008. The SlimLock. The SlimLock was originally produced in 2005 as a tribute to John Russell Case. Each knife carries a "JRC" (John Russell Case) tang stamp and a liner that locks. The first featured BG-42 steel blades.
Case colouring refers to this pattern and is commonly encountered as a decorative finish on firearms. Case-hardened steel combines extreme hardness and extreme toughness, which is not readily matched by homogeneous alloys since hard homogeneous steels tend to be brittle, especially those steels whose hardness relies on carbon content alone.
Generally, the bolts are 15 to 22 inches long but the standard length is 20 inches. Experts recommend longer bolts [4] but they have certain disadvantages as well. The weight of the bolt can have a serious effect on the range of the bolt. The bolt's total weight includes the bolt's weight, nock, insert, vanes, and broadhead or field point.
A Lombard shield boss from northern Italy, 7th century (Metropolitan Museum of Art) A shield boss , or umbo , is a round, convex or conical piece of material at the centre of a shield . Shield bosses (or sometimes, just "bosses") are usually made of thick metal but could also be made of wood.
When a material galls, some of it is pulled with the contacting surface, especially if there is a large amount of force compressing the surfaces together. [1] Galling is caused by a combination of friction and adhesion between the surfaces, followed by slipping and tearing of crystal structure beneath the surface. [ 2 ]
Gunmetal ingot is a related alloy in which the zinc is replaced by 2% lead; this makes the alloy easier to cast but it has less strength. [2]Modified gunmetal contains lead in addition to the zinc; it is typically composed of 86% copper, 9.5% tin, 2.5% lead, and 2% zinc.
Anchor bolts transfer different types of load: tension forces and shear forces. [3] A connection between structural elements can be represented by steel columns attached to a reinforced concrete foundation. [4] A common case of a non-structural element attached to a structural one is the connection between a facade system and a reinforced ...
The first prototype of the shield was believed to be created in the Late Neolithic Age. However the oldest surviving shields date to sometime in the Bronze Age. [3] The oldest form of shield was a protection device designed to block attacks by hand weapons, such as swords, axes and maces, or ranged weapons like sling-stones and arrows.
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